SPSS INC
S-3, 1997-11-26
PREPACKAGED SOFTWARE
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   As filed with the Securities and Exchange Commission on November 26, 1997.

                         Registration No. _____________


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                    SPSS INC.
             (Exact name of registrant as specified in its charter)


               DELAWARE                              36-2815480

    (State or other jurisdiction of               (I.R.S. Employer
    incorporation or organization)             Identification Number)


               444 North Michigan Avenue, Chicago, Illinois 60611
                                 (312) 329-2400
 (Address, including zip code, and telephone number, including area code, 
                  of registrant's principal executive offices)

                                 Edward Hamburg
 Executive Vice President, Corporate Operations, Chief Financial Officer, 
                                 and Secretary
                                    SPSS Inc.
                            444 North Michigan Avenue
                             Chicago, Illinois 60611
                                 (312) 329-2400

 (Name, address, including zip code, and telephone number, including area code,
                              of agent for service)

                                   Copies to:

                              T. Stephen Dyer, Esq.
                                 Ross & Hardies
                             150 N. Michigan Avenue
                             Chicago, Illinois 60601
                                 (312) 558-1000

    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: AS SOON
       AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.


 If any of the securities being registered on this form are to be offered on a
  delayed or continuous basis pursuant to Rule 415 under the Securities Act of
                        1933, check the following box.|X|



<PAGE>




                         CALCULATION OF REGISTRATION FEE



<TABLE>
<CAPTION>

                                                                                         Proposed
                                                                   Proposed               Maximum
                                                                   Maximum               Aggregate             Amount of
          Title of Each of                Amount to be          Offering Price           Offering           Registration Fee
    Securities to be Registered            Registered            Per Unit (1)            Price(1)
- --------------------------------------------------------------------------------------------------------------------------------
<S>                                        <C>                      <C>                 <C>                   <C>      
Common Stock, $.01 par value               1,031,951                $22.6875            $23,412,388           $7,094.66

</TABLE>

(1)      Solely  for the  purpose  of  calculating  the  registration  fee,  the
         offering price per share,  the aggregate  offering price and the amount
         of the  registration  fee have been  computed in  accordance  with Rule
         457(c) under the Securities Act of 1933, as amended.  Accordingly,  the
         price per share of Common Stock has been  calculated to be equal to the
         average  of the high and low  prices  for a share  of  Common  Stock as
         reported by the Nasdaq National Market on November 20, 1997, which is a
         specified  date within five business days prior to the original date of
         filing of this Registration Statement.

         THE REGISTRANT HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE
OR DATES AS MAY BE NECESSARY TO DELAY ITS  EFFECTIVE  DATE UNTIL THE  REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY  STATES THAT THIS REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.



                                      - 1 -

<PAGE>



The  information  contained  herein is  subject to  completion or  amendment.  A
Registration  Statement  relating  to these  securities  has been filed with the
Securities  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the Registration  Statement  becomes
effective.  This  Prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any state in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such state.



                             PRELIMINARY PROSPECTUS
                     SUBJECT TO COMPLETION NOVEMBER 26, 1997

PROSPECTUS

                                1,031,951 Shares


                                    SPSS INC.

                                  Common Stock
                                ($.01 Par Value)

         This Prospectus relates to the offer and sale of up to 1,031,951 shares
of the common stock, $.01 par value (the "Common Shares" or "Common Stock"),  of
SPSS Inc.  (the  "Company").  The Common  Shares  may be  offered by  particular
stockholders  of the Company  (the  "Selling  Stockholders")  or persons who are
recipients of gifts made by Selling  Stockholders   ("Donee  Stockholders") from
time to time in  transactions  on the  Nasdaq  National  Market,  in  negotiated
transactions, or a combination of such methods of sale, at fixed prices that may
be changed,  at market prices  prevailing at the time of sale, at prices related
to  such  prevailing  market  prices  or  at  negotiated   prices.  The  Selling
Stockholders or Donee  Stockholders may effect such  transactions by the sale of
the Common  Shares to or through  broker-dealers,  and such  broker-dealers  may
receive  compensation in the form of discounts,  concessions or commissions from
the Selling Stockholders, Donee Stockholders and/or the purchasers of the Common
Shares for whom such broker-dealers may act as agent or to whom they may sell as
principal, or both (which compensation to a particular broker-dealer might be in
excess of customary commissions).  The Selling Stockholders,  Donee Stockholders
and any  broker-dealer  who acts in  connection  with the sale of Common  Shares
hereunder  may be deemed to be  "underwriters"  as that term is  defined  in the
Securities Act of 1933, as amended (the  "Securities  Act"),  and any commission
received  by them and  profit on any resale of the  Common  Shares as  principal
might  be  deemed  to  be  underwriting  discounts  and  commissions  under  the
Securities Act. See "Selling  Stockholders"  elsewhere in this  Prospectus.  The
Company will not receive any of the proceeds  from the sale of the Common Shares
by the Selling Stockholders or Donee Stockholders.

         The Company's  Common Stock is traded and quoted on the Nasdaq National
Market under the symbol "SPSS." On November 25, 1997, the last sale price of the
Common Stock, as reported on the Nasdaq National Market, was $23 7/8 per share.

         The Company will bear all expenses (other than  underwriting  discounts
and selling  commissions,  and fees and expenses of counsel or other advisors to
the  Selling  Stockholders  and  Donee  Stockholders)  in  connection  with  the
registration of the shares of Common Stock being offered hereby,  which expenses
are estimated to be approximately $60,000. See "Selling Stockholders"  elsewhere
in this Prospectus.

         SEE "RISK  FACTORS" FOR A DISCUSSION OF CERTAIN  FACTORS THAT SHOULD BE
CONSIDERED IN CONNECTION WITH AN INVESTMENT IN THE COMMON STOCK.

         THESE   SECURITIES  HAVE  NOT  BEEN  APPROVED  OR  DISAPPROVED  BY  THE
SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION,  NOR HAS
THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
UPON THE  ACCURACY OR ADEQUACY OF THIS  PROSPECTUS.  ANY  REPRESENTATION  TO THE
CONTRARY IS A CRIMINAL OFFENSE.


                The date of this Prospectus is November ___, 1997



<PAGE>



                              AVAILABLE INFORMATION


         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in
accordance therewith files reports,  proxy statements and other information with
the Securities and Exchange Commission (the "Commission").  Such reports,  proxy
statements  and other  information  filed by the Company,  and the  Registration
Statement of which this  Prospectus  forms a part,  the  exhibits and  schedules
thereto  and  amendments  thereof,  may be  inspected  and  copied at the public
reference  facilities  maintained by the  Commission at 450 Fifth Street,  N.W.,
Room 1024, Judiciary Plaza, Washington,  D.C. 20549, and at the regional offices
of the  Commission  located at 7 World Trade Center,  13th Floor,  New York, New
York 10048 and at Citicorp Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois  60661-2511.  Copies of such  material  can also be  obtained  from the
Public Reference Section of the Commission at 450 Fifth Street,  N.W., Judiciary
Plaza,  Washington,  D.C. 20549 at prescribed rates. The Commission  maintains a
Web site that  contains  reports,  proxy and  information  statements  and other
information  regarding  registrants,  like the Company, that file electronically
with the  Commission  and the address of that Web site is  "http://www.sec.gov".
The  Company's  Common  Stock is  quoted  on the  Nasdaq  National  Market,  and
therefore  such reports,  proxy  statements  and other  information  can also be
inspected  at the offices of the National  Association  of  Securities  Dealers,
Inc., 1735 K Street, N.W., 3rd Floor, Washington, D.C. 20006.

         Additional  information  regarding  the Company and the shares  offered
hereby is contained in the  Registration  Statement on Form S-3 and the exhibits
thereto (collectively,  the "Registration  Statement") filed with the Commission
under  the  Securities  Act of 1933,  as  amended  (the  "Securities  Act").  As
permitted by the rules and regulations of the  Commission,  this Prospectus does
not contain all of the information set forth in the  Registration  Statement and
the exhibits thereto, to which reference is hereby made. Statements made in this
Prospectus  as to the  contents of any  contract,  agreement  or other  document
referred to are not  necessarily  complete.  With respect to each such contract,
agreement or other document filed as an exhibit to the  Registration  Statement,
reference is hereby made to the exhibit for a more complete  description  of the
matter  involved,  and each  such  statement  will be  deemed  qualified  in its
entirety by such reference.  For further information with respect to the Company
and the shares of Common Stock offered  hereby,  reference is hereby made to the
Registration Statement, and the exhibits thereto.

         SPSS,  Categories,  SYSTAT,  Jandel Scientific,  SigmaPlot,  SigmaStat,
SigmaScan  and  SigmaGel  are  registered trademarks of the Company. SPSS/PC(TM)
SPSS Real Stats. Real Easy(TM), BMDP(TM), Jandel(TM), CLEAR(TM), DeltaGraph(TM),
Quancept(TM) and Quantime(TM)  are  unregistered  trademarks of the Company.  QI
Analyst(TM)  is currently  an  unregistered  trademark  of the Company,  but the
Company has received  notification  from the United  States Patent and Trademark
Office that the Company may pursue further  registration  on a showing of use of
the trademark in interstate commerce.  This Prospectus also includes trade names
and marks of companies other than SPSS Inc.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The Company hereby  incorporates  by reference the following  documents
previously filed with the Commission:

          (a) The Company's Annual Report on Form 10-K, filed March 31, 1997 for
     the fiscal year ended December 31, 1996;

          (b) The Company's  Quarterly  Report on Form 10-Q,  filed May 15, 1997
     for the fiscal quarter ended March 31, 1997;

          (c) The Company's  Quarterly Report on Form 10-Q filed August 14, 1997
     for the fiscal quarter ended June 30, 1997;

                                      - 2 -

<PAGE>




          (d) The  Company's  Quarterly  Report on Form 10-Q filed  November 14,
     1997 for the fiscal quarter ended September 30, 1997;

          (e) The Company's  Current Report on Form 8-K and  amendments  thereto
     filed with the  Commission  on October  15, 1997  (acquisition  of Quantime
     Limited);

          (f) The description of the Company's Common Stock, $.01 par value (the
     "Common Stock"),  contained in the Company's Registration Statement on Form
     8-A filed with Commission on August 4, 1993,  pursuant to Section 12 of the
     Exchange Act; and

          (g) The Company's  Proxy  Statement,  filed with the Commission on May
     20, 1997,  for its annual  meeting of  stockholders  held on June 18, 1997,
     except for the Compensation Committee Report contained therein.

         All  reports  and other  documents  filed by the  Company  pursuant  to
Sections 13(a),  13(c), 14 and 15(d) of the Exchange Act, subsequent to the date
of this Prospectus and prior to the filing of a post-effective  amendment to the
Registration  Statement,  shall be deemed to be incorporated by reference in the
Registration  Statement  and to be a part hereof from the date of filing of such
documents.  Any  statement  contained  herein or in a document  incorporated  or
deemed to be incorporated by reference  herein shall be deemed to be modified or
superseded  for  purposes  of this  Prospectus  to the extent  that a  statement
contained  herein,  or in any  subsequently  filed  document which also is or is
deemed to be  incorporated  by reference  herein,  modifies or  supersedes  such
statement.  Any such  statement so modified or  superseded  shall not be deemed,
except as so modified or superseded, to constitute a part of this Prospectus.

         The Company will provide, without charge, to each person (including any
beneficial  owner) to whom this  Prospectus is  delivered,  upon written or oral
request of such person,  a copy of any and all of the information  that has been
incorporated  by reference in this  Prospectus  (not including  exhibits to such
information unless such exhibits are specifically incorporated by reference into
such  information).  Such  requests  should  be  directed  to:  Edward  Hamburg,
Executive Vice President,  Corporate  Operations,  Chief  Financial  Officer and
Secretary,  at the Company's  principal  executive offices at 444 North Michigan
Avenue, Chicago, Illinois 60611, telephone (312) 329-2400.



                                      - 3 -

<PAGE>



UNLESS THE CONTEXT OTHERWISE  REQUIRES,  REFERENCES IN THIS PROSPECTUS TO "SPSS"
AND THE  "COMPANY"  SHALL MEAN SPSS INC. A DELAWARE  CORPORATION,  ITS  ILLINOIS
PREDECESSOR AND ITS  SUBSIDIARIES,  COLLECTIVELY;  AND REFERENCES TO THE "COMMON
STOCK" SHALL MEAN SPSS INC.'S COMMON STOCK, PAR VALUE $ .01 PER SHARE.

                                   THE COMPANY

General

         SPSS Inc. ("the  Company") was  incorporated  in Illinois in 1975 under
the name "SPSS,  Inc." and was  reincorporated in Delaware in May 1993 under the
name "SPSS Inc." The Company is a multinational company that delivers reporting,
analysis and modeling software products, and whose primary markets are marketing
research,   business  analysis/data  mining,  scientific  research  and  quality
improvement analysis.  The Company develops,  markets and supports an integrated
line of statistical software and other products that enable users to effectively
bring marketplace and enterprise data to bear on decision-making.  The Company's
major products include SPSS for business and general  applications,  NewView for
analytical reporting,  SYSTAT, SigmaPlot and DeltaGraph for scientific research,
QI Analyst for quality improvement and statistical process control, allCLEAR for
process  documentation  and management  and the Quantime  family of products for
market  research.  The primary users of the Company's  software are managers and
data  analysts  in  corporate   settings,   government   agencies  and  academic
institutions.  In  addition  to its  widespread  use in  survey  analysis,  SPSS
software  also  performs  other  types of market  research,  as well as  quality
improvement   analyses,   scientific  and  engineering   applications  and  data
reporting.   The  current   generation  of  SPSS  desktop  products  features  a
windows-based   point-and-click   graphical   user   interface,    sophisticated
statistical procedures, data access and management capabilities,  report writing
and integrated  graphics.  The Company's  products provide extensive  analytical
capabilities not found in spreadsheets,  database management systems or graphics
packages.

         In its 22 years of operation,  SPSS has become a widely recognized name
in statistical  software.  The Company plans to leverage its current position to
take advantage of the increased demand for software  applications  that not only
provide ready access to the data that organizations  collect and store, but also
enable users to systematically  analyze,  interpret and present such information
for  use  in  decision-making.  Management  believes  that  ease-of-use  of  the
Company's  current  generation  products,  combined with the greater  processing
speed and storage capacity of the latest desktop  computers,  has  substantially
expanded the market for SPSS statistical software.

         In summer 1993, the Company  completed an initial public  offering (the
"IPO") of common stock, $.01 par value (the "Common Stock"). The Common Stock is
listed on the Nasdaq National Market under the symbol "SPSS". In early 1995, the
Company and certain  selling  stockholders  (the  "Selling  Stockholders")  sold
1,865,203 shares of Common Stock in a public offering.

         The  Company  is  a  Delaware  corporation.   The  Company's  principal
executive  offices  are located at 444 N.  Michigan  Avenue,  Chicago,  Illinois
60611,  and its  telephone  number at its principal  executive  offices is (312)
329-2400.

Safe Harbor

         "Safe Harbor" Statement under the Private Securities  Litigation Reform
Act of 1995: With the exception of historical information, the matters discussed
in this  Prospectus  are  forward-looking  statements  that  involve  risks  and
uncertainties including, but not limited to, market conditions,  competition and
other risks  indicated in the  Registration  Statement of which this  Prospectus
forms a part,  and the Company's  other filings with the Securities and Exchange
Commission.


                                      - 4 -

<PAGE>




Recent Developments

         The Company  appointed  Michael  Blair as a director on July 24,  1997,
filling in a vacancy on the Board of Directors of the Company.

         In September 1997, SPSS acquired  approximately  97% of the outstanding
shares of capital stock of Quantime Limited,  a corporation  organized under the
laws of England  ("Quantime"),  from certain shareholders and warrant holders of
Quantime, in exchange for 863,049 shares of Common Stock. In November 1997, SPSS
acquired  the  remaining  shares of capital  stock of Quantime  in exchange  for
28,175 shares of Common Stock. The acquisition was accounted for as a pooling of
interests.  Quantime is a developer of market research software  products.  SPSS
will  continue to operate the Quantime  business  principally  from the Quantime
offices in London, England.

         In November 1997, SPSS acquired the outstanding shares of capital stock
of In2itive  Technologies,  a  corporation  organized  under the laws of Denmark
("In2itive"),  in  exchange  for  140,727  shares  of  Common  Stock in a merger
accounted for as a pooling of interests. In2itive is a computer software company
specializing  in market  research  software.  SPSS will  continue to operate the
In2itive  business  principally  from the In2itive  headquarters  in Copenhagen,
Denmark.

         The financial  information  included herein other than in the Unaudited
Selected Pro Forma  Financial  Data  and share  amounts  reflect  the Company as
combined with Quantime,  but does not include the In2itive  acquisition,  unless
otherwise indicated.

                   UNAUDITED SELECTED PRO FORMA FINANCIAL DATA
                      (in thousands, except per share data)


The unaudited  selected pro forma  financial  data is provided as  supplementary
information  for  illustrative  purposes to give effect to the  acquisitions  of
Quantime and In2itive.  The unaudited  selected pro forma  financial  data gives
retroactive effect to the acquisitions of Quantime and In2itive, which have been
accounted for as poolings of interests for financial reporting purposes,  and as
a result,  the financial  position and results of operations are presented as if
the combining  companies had been  consolidated for all periods  presented.  The
financial data include in the opinion of management, all adjustments (consisting
only of normal recurring  adjustments)  necessary to present fairly the data for
the periods presented. The unaudited selected pro forma financial data should be
read  in  conjunction   with  the  other  financial   information   included  or
incorporated  by  reference  in this  Prospectus.  Such  financial  data are not
necessarily   indicative  of  the  results  that  would  have  occurred  if  the
acquisitions  had been in effect  during the periods  presented  or which may be
attained in the future.

<TABLE>
<CAPTION>

                                                                                                  Nine Months
                                                         Year Ended December 31,                Ended September 30,

                                                         1994          1995          1996            1996          1997
                                                         ----          ----          ----            ----          ----
Pro Forma Statement of Operations
Data:
<S>                                                   <C>           <C>           <C>             <C>           <C>    
    Net revenues                                      $74,760       $87,403       $99,621         $73,023       $80,684
    Operating income                                    7,168         6,396         9,917           8,201         1,695
    Net income                                          4,196(1)      3,180(2)      6,237(3)        5,072(4)        169(5)
    Net income per share                                $0.53(1)      $0.35(2)      $0.66(3)        $0.54(4)      $0.02(5)
    Shares used in per share calculation                7,926         9,042         9,382           9,321         9,643



                                      - 5 -

<PAGE>





Pro Forma Balance Sheet Data:

                                                                      As of December 31,                  As of September 30,
                                                                     
                                                                      1995          1996                          1997
                                                                     ------        ------                       -------
    Working capital                                                  $4,163        $9,042                       $12,944
    Total assets                                                     53,096        63,052                        57,463
    Total stockholders' equity                                       21,232        29,099                        29,191


</TABLE>


(1)  Includes a pre-tax  write-off of acquired  in-process  technology and other
     acquisition-related charges amounting to $1,928.

(2)  Includes a pre-tax  write-off of acquired  in-process  technology and other
     acquisition-related charges amounting to $1,051 and a write-off principally
     of certain software assets capitalized more than two years ago amounting to
     $2,466.

(3)  Includes a pre-tax  write-off of acquired  in-process  technology and other
     acquisition-related charges amounting to $3,636.

(4)  Includes a pre-tax  write-off of  acquisition-related  charges amounting to
     $980.

(5)  Includes  pre-tax charges of $2,413  relating to certain asset  write-downs
     and acquisition-related costs of $5,985.

                                  RISK FACTORS

         In addition to the other information in this Prospectus,  the following
risk  factors  should  be  considered   carefully  by  potential  purchasers  in
evaluating a sale of the Common Stock offered hereby.

         Fluctuations in Quarterly  Operating Results.  The Company's  quarterly
operating  results  can  be  subject  to  fluctuation  due to  several  factors,
including   the  number  and  timing  of  product   updates   and  new   product
introductions,  delays  in  product  development  and  introduction,  purchasing
schedules of its customers,  changes in foreign currency exchange rates, product
and market development expenditures, the timing of product shipments, changes in
product mix,  timing,  costs and effects of  acquisitions  and general  economic
conditions.  Because the Company's expense levels are to a large extent based on
its forecasts of future revenues, operating results may be adversely affected if
such revenues fall below  expectations.  Accordingly,  the Company believes that
quarter-to-quarter   comparisons  of  its  results  of  operations  may  not  be
meaningful and should not be relied upon as an indication of future performance.
The Company has  historically  operated  with very  little  backlog  because its
products are generally shipped as orders are received. As a result,  revenues in
any  quarter  are  dependent  on orders  shipped  and  licenses  renewed in that
quarter. The Company has experienced a seasonal pattern in its operating results
with the fourth  quarter  typically  having the highest  operating  income.  For
example,  excluding acquisition and other non-recurring  charges, the percentage
of the  Company's  operating  income  realized in the fourth  quarter was 33% in
1994,  34% in 1995 and 32% in 1996.  In  addition,  the timing and amount of the
Company's  revenues are subject to a number of factors that make  estimation  of
operating results prior to the end of a quarter uncertain. A significant portion
of  the  Company's   operating   expenses  are  relatively  fixed,  and  planned
expenditures are based primarily on revenue forecasts. More specifically, in the
fourth quarter,  the variable profit margins on modest increases in sales volume
at the end of the quarter are  significant.  Should the Company  fail to achieve
such fourth quarter revenue increases, net income for the fourth quarter and the
full year could be materially affected.  Generally,  if revenues do not meet the
Company's expectations in any given quarter, operating results will be adversely
affected. Although the Company had been profitable in each of the seven quarters
up to and including the quarter ending June 30, 1994, the Company  experienced a
net loss of $137,000 in the third quarter of 1994 due to a one-time write-off of
$1,928,000 for acquired and in-process technology and other  acquisition-related
charges

                                      - 6 -

<PAGE>



recorded  in  connection  with  the  Company's   acquisition  of  SYSTAT,   Inc.
("SYSTAT").  The Company was  profitable in the seven quarters from December 31,
1994  through  June 30,  1997,  but had a net loss of  $3,401,000  in the  third
quarter of 1997 due primarily to one-time  acquisition charges of $5,985,000 and
a charge from the  revaluation of certain assets of $2,413,000.  There can be no
assurance that  profitability  on a quarterly or annual basis can be achieved or
sustained in the future.

         Dependence on a Single  Product  Category;  Declining  Sales of Certain
Products.  The  Company  derives  the major part of its  product  revenues  from
licenses of  statistical  software.  Accordingly,  any decline in revenues  from
licenses of the  Company's  statistical  software,  or  reduction  in demand for
statistical  software  generally,  could have a material  adverse  effect on the
Company.

         In recent  years,  SPSS,  excluding  the  effects of the  Quantime  and
In2itive acquisitions, has experienced a significant shift in the sources of its
revenues. Historically, the Company derived a large portion of its revenues from
licenses of its mainframe and  minicomputer  ("Large  Systems")  products.  As a
result of the  general  shift by  computer  users from Large  Systems to desktop
computers,  the Company  experienced  a decline in revenues  from Large  Systems
products in the last  several  years,  although  in 1996 sales of Large  Systems
products  stabilized.   Revenues  from  Large  Systems  licenses  declined  from
approximately  $15.6  million in 1991 to $10.7  million in 1996,  while sales of
desktop products  increased from $14.7 million in 1991 to $66.2 million in 1996.
Revenues from Large Systems  licenses  increased  slightly from 1995 to 1996, by
$45,000.  Management  is unable to predict  whether the decline in Large Systems
licenses will continue or at what rate such licenses will decline. Revenues from
the Company's  products for desktop computers  ("Desktop  products") now account
for nearly  three-quarters  of the Company's  revenues and this  percentage  may
continue to increase.

         Risk Relating to Business Integration in Europe and Other Acquisitions.
In recent years, SPSS has made a significant  number of acquisitions,  including
the  acquisition of businesses  based outside of the United States.  See "Recent
Developments."  While SPSS has substantial  international  operations,  it faces
challenges and business integration issues with its September,  1997 acquisition
of  Quantime  Limited,  a  corporation  organized  under the laws of the  United
Kingdom  ("Quantime").  Although persons whom the Company believes are qualified
and trained will continue to work with Quantime  after its  acquisition by SPSS,
there can be no assurance  that Quantime will be able to retain these  employees
or hire suitable replacements in the event they should leave the employ of SPSS.
If the Company  loses key  personnel  from  Quantime  or is unable to  integrate
Quantime's  business  into its own  effectively,  the Company may  experience  a
material adverse impact on its financial condition.  While SPSS believes that it
has been  successful in integrating  the  acquisitions  it has made in the past,
there can be no assurance that the recent  acquisitions  of Quantime or In2itive
or future acquisitions will be successfully integrated into SPSS.

         Rapid   Technological   Change.   The  computer  software  industry  is
characterized by rapid technological advances, changes in customer requirements,
frequent  product  enhancements  and new product  introductions.  The  Company's
future success will depend upon its ability to enhance its existing products and
introduce new products that keep pace with technological  developments,  respond
to evolving customer requirements and achieve market acceptance.  In particular,
the Company  believes it must  continue to respond  quickly to users'  needs for
greater  functionality,  improved  usability  and support for new  hardware  and
operating  systems.  Any  failure  by  the  Company  to  respond  adequately  to
technological developments and customer requirements,  or any significant delays
in product development or introduction, could result in loss of revenues. In the
past, the Company has, on occasion,  experienced  delays in the  introduction of
new  products  and product  enhancements,  primarily  due to  difficulties  with
particular  operating  environments and problems with software provided by third
parties. The extent of these delays has varied depending upon the size and scope
of the project and the nature of the problems encountered. Such delays have most
often  resulted from "bugs"  encountered  in working with new and/or  beta-stage
versions  of  operating  systems and other  third  party  software,  and bugs or
unexpected  difficulties  in existing  third  party  software  which  complicate
integration  with the  Company's  software.  From time to time,  the Company has
discovered bugs in its products which are resolved through maintenance  releases
or through periodic updates depending upon the seriousness of the defect.  There
can be no assurance that the Company will be successful in developing and

                                      - 7 -

<PAGE>



marketing  new  products or product  enhancements  on a timely basis or that the
Company will not experience significant delays or defects in its products in the
future,  which could have a material adverse effect on the Company. In addition,
there can be no assurance that new products or product enhancements developed by
the Company will achieve market  acceptance or that  developments by others will
not render the Company's products or technologies obsolete or noncompetitive.

         International  Operations.   The  Company's  revenues  from  operations
outside of North  America  accounted for  approximately  49%, 52% and 53% of the
Company's net revenues in 1994, 1995 and 1996, respectively. The Company expects
that revenues from  international  operations will continue to represent a large
percentage  of  its  net  revenues  and  that  this   percentage  may  increase,
particularly  as the  Company  further  "localizes"  the  SPSS  product  line by
translating  its products into  additional  languages and expands its operations
through  acquisitions  of  companies  outside the United  States.  International
revenues are subject to a number of risks,  including  greater  difficulties  in
accounts  receivable  collection,  longer payment  cycles,  exposure to currency
fluctuations,  political and economic  instability  and the burdens of complying
with a wide variety of foreign  laws and  regulatory  requirements.  The Company
also  believes  that it is  exposed  to  greater  levels of  software  piracy in
international  markets because of the weaker protection afforded to intellectual
property in some foreign jurisdictions. As the Company expands its international
operations,  the risks described  above could increase and, in any event,  could
have a material adverse effect on the Company.

         Potential  Volatility  of  Stock  Price.  There  has  been  significant
volatility in the market prices of securities of technology companies, including
SPSS,  and,  in some  instances,  such  volatility  has  been  unrelated  to the
operating  performance  of such  companies.  Market  fluctuations  may adversely
affect the price of the Common Stock.  The Company also believes factors such as
announcements  of new  products  by the  Company or its  competitors,  quarterly
variations  in  financial  results,  recommendations  and  reports of  analysts,
acquisitions  and factors  beyond the  Company's  control could cause the market
price of the Common Stock to fluctuate substantially.

         Reliance on  Relationships  with Third  Parties.  The Company  licenses
certain software from third parties.  Some of this licensed software is embedded
in the  Company's  products,  and some is  offered as add-on  products.  If such
licenses are discontinued,  or become invalid or unenforceable,  there can be no
assurance that the Company will be able to develop substitutes for this software
independently or to obtain alternative sources in a timely manner. Any delays in
obtaining or developing  substitutes for licensed software could have a material
adverse effect on the Company.

         In February  1993,  the Company  entered into an  exclusive,  worldwide
agreement (the "Prentice Hall  Agreement")  with Prentice Hall, Inc.  ("Prentice
Hall") under which Prentice Hall publishes and  distributes  the student version
of the Company's  software and all of the Company's  publications.  As a result,
the Company is dependent on Prentice Hall for the development and support of the
markets for student software and its publications.  The failure of Prentice Hall
to perform its obligations  under the Prentice Hall Agreement  adequately  could
have a material adverse effect on the Company.

         In January  1997,  the  Company  entered  into a Banta  Global  Turnkey
Software  Distribution  Agreement  (the  "Banta  Agreement"),  under which Banta
Global Turnkey ("Banta")  manufactures,  packages, and distributes the Company's
software  products to the  Company's  domestic and  international  customers and
certain  international  subsidiaries.  The Banta Agreement has a three-year term
and automatically  renews thereafter for successive  periods of one year. Either
party may terminate the Banta Agreement for cause by written notice if the other
materially  breaches its obligations.  Such a termination  notice for cause must
specifically  identify the breach (or breaches)  upon which it is based and will
be effective  180 days after the notice is received by the other  party,  unless
the  breach(es) is (are)  corrected  during the 180 days.  Either party may also
terminate the Banta Agreement on 180 days' notice for any other reason. If Banta
terminates the Banta  Agreement  other than for cause,  it is required to assist
the Company in finding a new vendor. If Banta fails to perform adequately any of
its obligations under the Banta Agreement, the Company's operating results could
be materially adversely affected.

                                      - 8 -

<PAGE>




         Changes in Public  Expenditures and Overall Economic Activity Levels. A
significant  portion  of the  Company's  revenues  comes  from  licenses  of its
products  directly to foreign and  domestic  government  entities.  In addition,
significant  amounts of the  Company's  revenues  come from licenses to academic
institutions,  healthcare  organizations  and private  businesses which contract
with or are funded by government entities.  Government  appropriations processes
are often  slow,  unpredictable  and subject to factors  outside  the  Company's
control. In addition, proposals are currently being made in certain countries to
reduce   government   spending.   Reductions  in  government   expenditures  and
termination or  renegotiation of  government-funded  programs or contracts could
have a material adverse effect on the Company. In addition,  declines in overall
levels of economic  activity  could also have a material  adverse  impact on the
Company.

         Competition.  The market for the  statistical  software  is both highly
competitive  and  fragmented.  The Company  primarily  competes with one general
statistical software provider which is larger and has greater resources than the
Company,  as  well  as  with  numerous  other  companies  offering   statistical
applications  software,  many  of  which  offer  products  focused  on  specific
statistical applications. The Company considers its primary worldwide competitor
to be the larger and better-financed SAS Institute ("SAS"), although the Company
believes that SAS's revenues are derived principally from products that are used
for  purposes  other than  statistics  and operate on large  systems  platforms.
StatSoft Inc., developers of the Statistica product ("Statistica"),  Manugistics
Group, Inc., distributors of the Statgraphics Plus product ("Statgraphics"), and
Minitab,  Inc. ("Minitab") are also competitors,  although their annual revenues
from statistical products are believed to be considerably less than the revenues
of SPSS.

         In the future,  SPSS may face  competition  from new entrants  into the
statistical software market. The Company could also experience  competition from
companies in other sectors of the broader market for data  management,  analysis
and  presentation  software,   such  as  providers  of  spreadsheets,   database
management  systems,  report writers and executive  information  systems.  These
companies  have  added,  or  in  the  future  may  add,   statistical   analysis
capabilities to their products.  Many of these companies have  significant  name
recognition,  as well as  substantially  greater  capital  resources,  marketing
experience and research and development capabilities than the Company. There can
be no  assurance  that the Company  will have  sufficient  resources to make the
necessary  investment in research and  development  and sales and marketing,  or
that the  Company  will  otherwise  be able to make the  technological  advances
necessary to maintain or enhance its competitive position.  The Company's future
success will also depend  significantly upon its ability to continue to sell its
Desktop  products,  to attract new customers  looking for more  sophisticated or
powerful  software  and to  introduce  additional  add-on  products  to existing
customers.  There can be no  assurance  that the Company will be able to compete
successfully in the future.

         Dependence on Key Personnel. The Company is dependent on the efforts of
certain  executives  and  key  employees,  including  its  President  and  Chief
Executive Officer,  Jack Noonan. The Company's  continued success will depend in
part  on  its  ability  to  attract  and  retain  highly  qualified   technical,
managerial, sales, marketing and other personnel. Competition for such personnel
is intense.  There can be no assurance that the Company will be able to continue
to attract or retain such highly qualified personnel. No life insurance policies
are maintained on the Company's key personnel.

         Intellectual  Property;  Proprietary Rights. The statistical algorithms
incorporated in the Company's software are not proprietary. The Company believes
that the proprietary technology constituting a portion of the Company's software
determines the speed and quality of displaying the results of computations,  the
connectivity of the Company's products with third party software and the ease of
use of its products.  The Company's success will depend, in part, on its ability
to protect the  proprietary  aspects of its  products.  The Company  attempts to
protect  its   proprietary   software   with  trade  secret  laws  and  internal
nondisclosure   safeguards,   as  well  as  copyright  and  trademark  laws  and
contractual  restrictions on copying,  disclosure and  transferability  that are
incorporated  into its software  license  agreements.  The Company  licenses its
software only in the form of executable code, with  contractual  restrictions on
copying, disclosures and transferability. Except for licenses of its products to
users of Large System products and annual licenses of its Desktop products,  the
Company licenses its products to end-users

                                      - 9 -

<PAGE>



by use of a  "shrink-wrap"  license  that  is not  signed  by  licensees,  as is
customary in the industry.  It is uncertain whether such license  agreements are
legally  enforceable.  The  source  code for all of the  Company's  products  is
protected as a trade secret and as  unpublished  copyrighted  work. In addition,
the Company has entered into  confidentiality and nondisclosure  agreements with
its  key  employees.  Despite  these  restrictions,   it  may  be  possible  for
competitors  or users to copy  aspects of the  Company's  products  or to obtain
information  which the  Company  regards as a trade  secret.  The Company has no
patents,   and  judicial   enforcement  of  copyright  laws  may  be  uncertain,
particularly outside of North America.  Preventing  unauthorized use of computer
software is  difficult,  and  software  piracy is  expected  to be a  persistent
problem for the packaged software  industry.  These problems may be particularly
acute in international  markets.  In addition,  the laws of certain countries in
which the Company's products are or may be licensed do not protect the Company's
products and intellectual  property rights to the same extent as the laws of the
United States.  Despite the precautions taken by the Company, it may be possible
for  unauthorized  third  parties  to  reverse  engineer  or copy the  Company's
products or obtain and use information  that the Company regards as proprietary.
There can be no  assurance  that the steps  taken by the  Company to protect its
proprietary  rights  will  be  adequate  to  prevent   misappropriation  of  its
technology.

         Although  the  Company's  products  have never  been the  subject of an
infringement claim, there can be no assurance that third parties will not assert
infringement claims against the Company in the future or that any such assertion
will not result in costly  litigation or require the Company to obtain a license
to use the  intellectual  property of third  parties.  There can be no assurance
that such licenses will be available on reasonable  terms,  or at all. There can
also be no  assurance  that the  Company's  competitors  will not  independently
develop  technologies  that are  substantially  equivalent  or  superior  to the
Company's technologies.

         Control by Existing Stockholders;  Antitakeover Effects. As of November
24, 1997,  the Company's  executive  officers and directors  owned  beneficially
approximately  13% of the outstanding  shares of Common Stock. The Norman H. Nie
Revocable Trust Dated March 15, 1991 (the "Nie Trust") and affiliates of the Nie
Trust are entitled to nominate a director for inclusion in the management  slate
for  election  to the  Board if the Nie  Trust  owns no less  than  12.5% of the
outstanding  shares of Common Stock.  As of November 24, 1997, the Nie Trust and
affiliates  of the Nie  Trust  beneficially  owned  approximately  12.3%  of the
outstanding  shares of Common Stock. The Company's  Certificate of Incorporation
and Bylaws contain a number of provisions, including provisions requiring an 80%
super  majority  stockholder  approval of certain  actions and  provisions for a
classified Board of Directors,  which would make the acquisition of the Company,
by means of an  unsolicited  tender offer,  a proxy  contest or otherwise,  more
difficult or impossible.

         Shares Eligible for Future Sale. The Company is filing the Registration
Statement  to permit  transactions  with  respect to the shares of Common  Stock
issued in connection with the Quantime and In2itive  transactions.  These shares
of Common Stock are currently deemed "restricted securities," as defined in Rule
144  under  the  Securities  Act,  and  may  not be  resold  in the  absence  of
registration  under the  Securities  Act or pursuant to an  exemption  from such
registration,  including  exemptions  provided by Rule 144 under the  Securities
Act.

         In addition to the shares of Common Stock which are outstanding,  as of
November 24, 1997,  there were vested options  outstanding held by management to
purchase  approximately  an additional  686,971 shares of Common Stock,  with an
average  exercise  price of $8.19 per share,  and  unvested  options to purchase
approximately an additional 169,972 shares of Common Stock. The Company has also
established a stock purchase plan  available to employees of the Company,  which
permits  employees to acquire  shares of Common Stock at the end of each quarter
at 85% of the market  price of the  Common  Stock as of the day after the end of
the quarter.

         No prediction can be made as to the effect,  if any, that future sales,
or the availability of shares of Common Stock for future sales, will have on the
market  price  prevailing  from time to time.  Sales of  substantial  amounts of
Common Stock by the Company or by shareholders who hold "restricted securities,"
or the perception that such sales may occur,  could adversely affect  prevailing
market prices for the Common Stock.


                                     - 10 -

<PAGE>



         Accumulated  Deficit.   The  Company  had  an  accumulated  deficit  of
$11,597,000 as of December 31, 1996.

                              SELLING STOCKHOLDERS

         The  following  table sets  forth the number of shares of Common  Stock
beneficially  owned by each Selling  Stockholder  as of November  24, 1997,  the
number  of  shares  of  Common  Stock  that  may  be  offered  for  the  Selling
Stockholder's  account and the number of shares of Common Stock and based on the
number of shares of Common Stock beneficially owned as of November 24, 1997, the
percentage  of the  shares  of  Common  Stock to be  beneficially  owned by such
Selling  Stockholder  if they elect to sell all of their  Shares of Common Stock
that are available for sale.
<TABLE>
<CAPTION>

                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------

<S>                                                <C>                 <C>              <C>                <C> 
Michael Oestreicher                                441,635             441,635           0                  *
TR UA DTD  6/30/97  
Edward  Sherman  Ross  Trust 
312 Walnut  Street,  Suite 1400
Cincinnati, OH 45202-4029

Joya Charitable Foundation                          88,418              88,418           0                  *
312 Walnut Street, Suite 1400
Cincinnati, OH  45202-4029

Min Charitable Trust                                16,007              16,007           0                  *
c/o Richard Cassell
Brown & Wood, Princes Court
7 Princes Street
London EC2R 8AQ  UK

M Ross                                               1,904               1,904           0                  *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG  UK

J Powell                                             1,904               1,904           0                  *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG  UK


                                     - 11 -

<PAGE>


                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------


Norman Grunbaum                                    115,744             115,744            0                 *
TR UA DTD 6/30/97
Norman Grunbaum Discretionary Settlement
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG  UK

Richard Kottler
TR UA DTD 6/30/97
Richard Kottler Discretionary Settlement           119,522             119,522           0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG  UK

International Services SA                           27,375              27,375           0                 *
7-11 Britannia Place
Bath Street
St. Helier, Jersey  JE4 8US
             Channel Islands

Louis Davidson                                       2,585               2,585           0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG  UK

J Marinelli                                         20,261              20,261           0                 *
c/o Quantime Corp.
11 East 26th Street, 16th Fl
New York, NY  10010

Stephanie Gwilliam                                  13,117              13,117           0                 *
1 Redroofs Close, The Avenue
Beckenham, Kent BR3 2YR

Tony Legg 10,297                                    10,297              10,297           0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

                                     - 12 -

<PAGE>


                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------



Mark Katz 9,530                                      9,530               9,530             0                 *
26 Hoop Lane
London NW11 8BU  UK

Eva Huzan 4,420                                      4,420               4,420             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Madeleine Ashbery                                    3,047               3,047             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Valerie Griffin                                      2,455               2,455             0                 *
c/o Quantime Corp.
100 Merchant Street, Suite 125
Cincinnati, OH  45246

Pete Trotman                                         2,331               2,331             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Joni Orgel                                           2,087               2,087             0                 *
c/o Quantime Corp.
11 East 26th Street, 16th Fl
New York, NY  10010

Adrian Dewey                                         1,675               1,675             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Pete Dacosta                                           761                 761             0                 *
c/o Quantime Corp.
100 Merchant Street, Suite 125
Cincinnati, OH  45246

                                     - 13 -

<PAGE>


                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------



Nick Brown                                             761                 761              0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Jonathan Chody                                         761                 761              0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Gail Haslam                                            609                 609              0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Annie McGlone                                          608                 608              0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Alan Renny                                             536                 536              0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK

Earl Wardally                                          456                 456              0                 *
c/o Quantime Ltd.
11 East 26th Street, 16th Floor
New York, NY  10010

Martin Klein                                           432                 432              0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG   UK



                                     - 14 -

<PAGE>


                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------

Sharon Jordan                                          334                 334              0                 *  
c/o Quantime Corp.
100 Merchant Street, Suite 125
Cincinnati, OH  45246

Heather Dyer                                           254                 254             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG    UK

Sue Wooderson                                          229                 229             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG    UK

Jonathan Rabson                                        229                 229             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG    UK

Jorge Almonacid                                        197                 197             0                 *
c/o Quantime SA de CV
Passeo de la Reforma
90-4 Pisco, Suite 405
Colonia Juarez    Mexico

Roger Phillips                                         152                 152             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG    UK

Louise Weale                                           152                 152             0                 *
c/o Quantime Ltd.
Maygrove House
Maygrove Road
London NW6 2EG    UK


                                     - 15 -

<PAGE>

                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------



John Taggart                                           152                 152            0                * 
c/o Quantime Ltd.                                                                          
Maygrove House                                                                             
Maygrove Road                                                                              
London NW6 2EG    UK                                                                       
                                                                                           
Andi Peretz                                            152                 152            0                *    
540 8th Street, Brooklyn                                                                   
New York, NY  11215                                                                        
                                                                                           
Gwen Smith                                              75                  75            0                *    
c/o Quantime Corp.                                                                         
11 East 26th Street, 16th Fl                                                               
New York, NY  10010                                                                        
                                                                                           
Wes Frost                                               30                  30            0                *    
c/o Quantime Corp.                                                                         
100 Merchant Street                                                                        
Suite 125                                                                                  
Cincinnati, OH  45246                                                                      
                                                                                           
Sue Jordan                                              30                  30            0                *    
c/o Quantime Ltd.                                                                          
Maygrove House                                                                             
Maygrove Road                                                                              
London NW6 2EG   UK                                                                        
                                                                                           
Jens Nielsen                                         8,838               8,838            0                *   
Ingas Vag 27 PL. 494                                                                      
28691 Orkelljunga                                                                         
Sweden                                                                                    
                                                                                          
Henrik Rosendahl                                     8,838               8,838            0                *   
Dyrehavevej 27, I                                                                         
2930 Klampenborg                                                                          
Denmark                                                                                   
                                                                                          
Ole Stangegaard                                      1,087               1,087            0                *   
Tvaerfej 46                                                                               
2830 Vitum                                                                                                    
Denmark                                                                                   

                                                      - 16 -

<PAGE>

                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------



Lars Thinggaard                                      1,087               1,087             0                *   
Drosselvej 53 K                                                                            
2000 Frederiksberg
Denmark

Peter Tottrup                                        3,020               3,020             0                *   
Langelands Plads5, 4th.                                                                    
2000 Frederiksberg
Denmark

Edward O'Hara                                       16,827              16,827             0                *   
Nattergalevej 16                                                                           
2970 Horsholm
Denmark

Steen Hansen                                           314                 314             0                *   
Snogegardsvej 120                                                                          
2860 Soborg
Denmark

Magnus Egholm                                           97                  97             0                *   
GI. Jernbanevej 26, 1th.                                                                   
2500 Valby
Denmark

Mikkel Jorgensen                                       869                 869             0                *   
Baunehojvej 46, st.tv.                                                                     
2800 Lyngby
Denmark

Michael Elbaek Bertelsen                               194                 194             0                *   
Lundtofteparken 36, 2th.                                                                   
2800 Lyngby
Denmark

Bjame Jensen                                           543                 543             0                * 
Lilsviervej 81B, 1tv.
2800 Lyngby
Denmark

Thomas Leistiko                                        431                 431             0                * 
Arhusgade 10, 1tv.
2100 Kobenhavn O
Denmark

Dansk Erhvervsinvestering                           12,944              12,944             0                * 
Bredgade 73
1260 Kobenhavn K
Denmark



                                     - 17 -

<PAGE>

                                                                      Maximum                Shares of Common
                                                                      Number                    Stock To Be
                                                 Shares of           of Shares              Beneficially Owned
                                               Common Stock          Available             Assuming Sale of All
                                               Beneficially         To Be Sold             Shares Available For
Name and Address of                             Owned As of          Pursuant                 Sale Hereunder
Selling Stockholder                          November 26, 1997        Hereto            Number          Percent
- ---------------------------------------------------------------------------------------------------------------


Bjorn Haugland                                      27,767              27,767             0                *   
Camilla Collettesvei 8                                                                     
9258 Oslo
Norway

2M Invest                                           47,541              47,541             0                *   
Frederiksgade 9                                                                            
1265 Kobenhavn K
Denmark

Dorte Siggaard Andersen                              1,087               1,087             0                *   
Malmmosevej 3                                                                              
2840 Holte

MSP Finans 2ApS                                      5,438               5,438             0                *   
Parkvaenget 2829                                                                           
2920 Charlottenlund

Hans Chr. Iversen                                    3,805               3,805             0                *   
Rungstedvej 97                                                                             
2960 Rungsted
</TABLE>

*    The  percentage  of shares  beneficially  owned  does not  exceed 1% of the
     class.

        The Company has agreed to register offers, sales and other distributions
of the shares of Common Stock of the Selling Stockholders and Donee Stockholders
offered  hereby  under the  Securities  Act.  In this  connection,  the  Selling
Stockholders  and  Donee  Stockholders  are  required  to pay  the  underwriting
discounts and commissions  and transfer taxes, if any,  associated with the sale
of their shares of Common Stock, and the Company will pay  substantially  all of
the expenses directly  associated with the registration of such shares of Common
Stock   hereunder.   

                                 USE OF PROCEEDS

          The Company will not receive any  proceeds  from the  registration  or
sale of the shares of Common Stock offered hereby.

                        DIVIDEND POLICY AND RESTRICTIONS

          The Company has never declared any cash dividends or  distributions on
its  capital  stock  and  does  not  anticipate  paying  cash  dividends  in the
foreseeable  future. The Company currently intends to retain its future earnings
to fund ongoing operations and future capital requirements of its business.

                              PLAN OF DISTRIBUTION

          The Common Stock may be offered  by the Selling  Stockholders or Donee
Stockholders from time to time in transactions on the Nasdaq National Market, in
negotiated  transactions,  or a  combination  of such methods of sale,  at fixed
prices that may be changed,  at market prices prevailing at the time of sale, at
prices related to such  prevailing  market prices or at negotiated  prices.  The
Selling  Stockholders or Donee  Stockholders may effect such transactions by the
sale of the Common Stock to or through  broker-dealers,  and such broker-dealers
may receive  compensation  in the form of discounts,  concessions or commissions
from the Selling  Stockholders,  Donee Stockholders and/or the purchasers of the
Common Stock for whom such  broker-dealers  may act as agent or to whom they may
sell as principal,  or both (which  compensation  to a particular  broker-dealer
might be in excess of customary  commissions).  The Selling Stockholders,  Donee
Stockholders and any

                                     - 18 -

<PAGE>



broker-dealer who acts in connection with the sale of Common Stock hereunder may
be deemed to be  "underwriters"  as that term is defined in the Securities  Act,
and any commission received by them and profit on any resale of the Common Stock
as principal might be deemed to be underwriting  discounts and commissions under
the Securities Act.

          No prediction can be made as to the effect, if any, that future sales,
or the availability of shares of Common Stock for future sales, will have on the
market price  prevailing from time to time. See "RISK FACTORS -- Shares Eligible
for Future Sale" elsewhere in this Prospectus.

          The Company is filing a registration  statement to permit transactions
with  respect  to all of the  shares of SPSS  Common  Stock  acquired  by former
shareholders  of Quantime and In2itive in connection  with the  acquisitions  of
Quantime and In2itive.  These shares are currently  "restricted  securities," as
defined  in Rule 144  under  the  Securities  Act,  and may not be resold in the
absence of  registration  under the  Securities  Act or pursuant to an exemption
from such  registration,  including  exemptions  provided  by Rule 144 under the
Securities Act.

                                  LEGAL MATTERS

          The  validity  of the shares of Common  Stock was passed  upon for the
Company by its general counsel, Ross & Hardies, Chicago, Illinois.

                                     EXPERTS

          The Consolidated  Financial  Statements and Schedule of the Company as
of  December  31,  1996 and 1995,  and for each of the  years in the  three-year
period ended December 31, 1996, incorporated by reference in this Prospectus and
elsewhere in the Registration Statement,  have been audited by KPMG Peat Marwick
LLP, independent certified public accountants, as indicated in their report with
respect  thereto,  incorporated  by reference  herein,  and are  incorporated by
reference  herein upon the authority of said firm as experts in  accounting  and
auditing.

          With respect to SPSS Inc.'s unaudited  interim  financial  information
for the  periods  ended March 31,  1996 and 1997,  June 30,  1996 and 1997,  and
September 30, 1996 and 1997,  incorporated by reference herein,  the independent
certified public  accountants have reported that they applied limited procedures
in accordance  with  professional  standards  for a review of such  information.
However,  their separate reports included in the Company's  quarterly reports on
Form 10-Q for the quarters  ended March 31, 1997,  June 30, 1997,  and September
30,  1997,  state that they did not audit and they do not  express an opinion on
such interim financial information. Accordingly, the degree of reliance on their
reports on such information  should be restricted in light of the limited nature
of the  review  procedures  applied.  The  accountants  are not  subject  to the
liability  provisions  of  Section  11 of the  Securities  Act of 1933 for their
reports on the unaudited interim financial  information because such reports are
not a "report" or a "part" of the registration  statement  prepared or certified
by the accountants within the meaning of Sections 7 and 11 of the Securities Act
of 1933.


                                     - 19 -

<PAGE>



- --------------------------------------------------------------------------------


NO DEALER, SALESMAN OR OTHER PERSON HAS
BEEN AUTHORIZED TO GIVE ANY INFORMATION               1,031,951 Shares
OR TO MAKE ANY REPRESENTATIONS OTHER
THAN THOSE CONTAINED IN THIS PROSPECTUS
IN CONNECTION WITH THE OFFER MADE BY
THIS PROSPECTUS AND, IF GIVEN OR MADE,
SUCH INFORMATION OR REPRESENTATIONS
MUST NOT BE RELIED UPON AS HAVING BEEN                    SPSS INC.
AUTHORIZED BY THE COMPANY.  NEITHER THE
DELIVERY OF THIS PROSPECTUS NOR ANY SALE
MADE HEREUNDER SHALL UNDER ANY                          COMMON STOCK
CIRCUMSTANCES CREATE AN IMPLICATION                   ($.01 PAR VALUE)
THAT  THERE HAS BEEN NO  CHANGE IN THE
  AFFAIRS  OF THE  COMPANY  SINCE THE DATE
HEREOF.  THIS  PROSPECTUS DOES NOT 
CONSTITUTE AN OFFER OR SOLICITATION BY
ANYONE IN ANY  JURISDICTION IN WHICH SUCH                _________________ 
OFFER OR SOLICITATION IS NOT AUTHORIZED                     Prospectus     
OR IN WHICH THE PERSON MAKING SUCH OFFER                 _________________ 
OR SOLICITATION IS NOT AUTHORIZED OR IN                                    
WHICH THE PERSON MAKING SUCH OFFER OR                                      
TABLE OF CONTENTS SOLICITATION IS NOT                 Dated November ___, 1997
QUALIFIED TO DO SO OR TO ANYONE TO WHOM                                    
IT IS UNLAWFUL TO MAKE SUCH OFFER OR      
SOLICITATION.




                       TABLE OF CONTENTS

                                                           Page

Available Information........................................ 2
Incorporation of Certain Documents by Reference.............. 2
The Company.................................................. 4
Risk Factors................................................. 6
Selling Stockholders........................................ 11
Plan of Distribution........................................ 17
Use of Proceeds..............................................16
Dividend Policy and Restrictions............................ 17
Legal Matters............................................... 17
Experts..................................................... 17






- --------------------------------------------------------------------------------


                                     - 20 -

<PAGE>




PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution

          The following  table sets forth various  estimated  fees and estimated
expenses in connection with the sale and  distribution  of the securities  being
registered, all of which are being borne by the registrant.


SEC registration fee.................................$     7,094.66
Printing expenses....................................$     1,000.00
                                                      -------------
Legal fees and expenses..............................$    20,000.00
Accounting fees and expenses.........................$    30,000.00
Miscellaneous........................................$     1,905.34
                                                      -------------
          Total......................................$    60,000.00
                                                       ============

Item 15.  Indemnification of Directors and Officers

          Delaware General  Corporation Law. The Company has statutory authority
to indemnify  the officers  and  directors.  The  applicable  provisions  of the
General  Corporation Law of the State of Delaware (the "GCL") state that, to the
extent such person is successful on the merits or otherwise,  a corporation  may
indemnify  any  person who was or is a party or who is  threatened  to be made a
party to any  threatened,  pending  or  completed  action,  suit or  proceeding,
whether civil,  criminal,  administrative or investigative (other than an action
by or in the right of the corporation),  by reason of the fact that he is or was
a director,  officer,  employee or agent of the corporation or is or was serving
at the request of the corporation as a director,  officer,  employee or agent of
another  corporation,  partnership,  joint  venture,  trust or other  enterprise
("such Person"),  against expenses (including attorneys' fees), judgments, fines
and amounts paid in settlement, actually and reasonably incurred by such Person,
if he acted in good faith and in a manner he reasonably believed to be in or not
opposed  to the  best  interests  of the  corporation  and with  respect  to any
criminal  action or proceeding,  had no reasonable  cause to believe his conduct
was unlawful.  In any threatened  pending or completed action by or in the right
of the  corporation,  a corporation also may indemnify any such Person for costs
actually and reasonably incurred by him in connection with that action's defense
or settlement,  if he acted in good faith and in a manner he reasonably believed
to be in or not opposed to the best interests of the  corporation;  however,  no
indemnification  shall be made with respect to any claim,  issue or matter as to
which such  Person  shall have been  adjudged  to be liable to the  corporation,
unless and only to the extent that a court shall  determine  that such indemnity
is proper.

          Under the applicable  provisions of the GCL, any indemnification shall
be made by the  corporation  only as  authorized  in the  specific  case  upon a
determination  that the  indemnification of the director,  officer,  employee or
agent is proper in the circumstances  because he has met the applicable standard
of conduct. Such determination shall be made:

                  (1) By the Board of Directors  by a majority  vote of a quorum
          consisting  of directors  who are not parties to such action,  suit or
          proceeding; or

                  (2) If such a quorum is not obtainable or, even if obtainable,
          a quorum of disinterested  directors so directs,  by independent legal
          counsel in a written opinion; or

                  (3)  By  the  affirmative  vote  of  a  majority of the shares
entitled to vote thereon.


                                     - 21 -

<PAGE>



          The   Company's    Certificate   of    Incorporation    provides   for
indemnification  to the  full  extent  permitted  by the  laws of the  State  of
Delaware against and with respect to threatened,  pending or completed  actions,
suits or proceedings arising from or alleged to arise from, a party's actions or
omissions  as a  director,  officer,  employee or agent of the Company or of any
subsidiary  of the  Company  or of any  other  corporation,  partnership,  joint
venture,  trust or other  enterprise which he has served in such capacity at the
request of the Company if such acts or omissions occurred or were or are alleged
to have occurred, while said party was a director or officer of the Company.



                                     - 22 -

<PAGE>



Item 16.  Exhibits

                                                                 Incorporation
                                                                      by
Exhibit                                                            Reference
Number     Description                                           (if applicable)

 2.1      Stock Purchase Agreements - Quantime                         *
 2.2      Stock Purchase Agreement - In2itive

 5.1      Opinion of Ross & Hardies regarding legality of
          shares of Common Stock

15.1      Letter Re: Unaudited Interim Financial Information

23.1      Consent of KPMG Peat Marwick LLP

23.2      Consent of Ross & Hardies (contained in opinion 
          described in 5.1)

24.1      Power of Attorney                                            * *

  * Two Stock Purchase  Agreements,  each dated September 30, 1997, between SPSS
and certain shareholders of Quantime are included as an exhibit to the Company's
report on Form 8-K filed with the  Commission on October 15, 1997. The remaining
Stock Purchase Agreement is being filed herewith.

  * * Included in signature pages.

          (b) The  Company  did not file any  reports on form 8-K during  fiscal
year 1995 or for the first two quarters of fiscal year 1996.  The Company  filed
reports on Form 8-K with the  Commission  on October  11, 1996  (acquisition  of
Clear Software),  and on December 4, 1996  (acquisition of Jandel  Corporation),
and on October 15, 1997 (acquisition of Quantime Limited).

Item 17.  Undertakings

          The undersigned registrant hereby undertakes:

                  (1) To file,  during any  period in which  offers or sales are
          being made, a post-effective amendment to this Registration Statement:

                  (i)  To include any prospectus required by section 10(a)(3) of
the Securities Act of 1933;

                  (ii) To reflect in the  prospectus any facts or events arising
          after the effective  date of the  registration  statement (or the most
          recent post-effective amendment thereof) which, individually or in the
          aggregate, represent a fundamental change in the information set forth
          in the  registration  statement.  Notwithstanding  the foregoing,  any
          increase  or decrease  in volume of  securities  offered (if the total
          dollar  value of  securities  offered  would not exceed that which was
          registered)  and  any  deviation  from  the  low  or  high  end of the
          estimated  maximum  offering  range  may be  reflected  in the form of
          prospectus  filed with the  Commission  pursuant to Rule 424(b) if, in
          the aggregate,  the changes in volume and price represent no more than
          a 20% change in the maximum aggregate  offering price set forth in the
          "Calculation of Registration Fee" table in the effective  registration
          statement.


                                     - 23 -

<PAGE>



                  (iii) To include any material  information with respect to the
          plan of  distribution  not previously  disclosed in this  Registration
          Statement  or  any  material   change  to  such   information  in  the
          Registration Statement.

          The undersigned  registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable,  each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the  Registration  Statement shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

          The undersigned registrant hereby undertakes to deliver or cause to be
delivered with the prospectus,  to each person to whom the prospectus is sent or
given,  the latest annual  report to security  holders that is  incorporated  by
reference  in  the  prospectus  and  furnished   pursuant  to  and  meeting  the
requirements  of Rule 14a-3 or Rule 14c-3 under the  Securities  Exchange Act of
1934;  and,  where  interim  financial  information  required to be presented by
Article 3 of Regulation S-X is not set forth in the Prospectus,  to deliver,  or
cause to be  delivered to each person to whom the  Prospectus  is sent or given,
the latest  quarterly  report that is specifically  incorporated by reference in
the Prospectus to provide such interim financial information.


                                     - 24 -

<PAGE>




                                   SIGNATURES

          Pursuant  to the  requirements  of the  Securities  Act of  1933,  the
registrant  has duly  caused  this  Registration  Statement  to be signed on its
behalf by the undersigned,  thereunto duly  authorized,  in the City of Chicago,
State of Illinois, on November 26, 1997.


                            SPSS INC.

                            By: /s/  Jack Noonan
                                     Jack Noonan
                                     President and Chief Executive Officer



                                     - 25 -

<PAGE>




                                POWER OF ATTORNEY

          Each person  whose  signature  appears  below hereby  constitutes  and
appoints Jack Noonan and Edward  Hamburg,  and each of them, the true and lawful
attorneys-in-fact and agents of the undersigned, with full power of substitution
and resubstitution,  for and in the name, place and stead of the undersigned, in
any and all capacities, to sign any and all amendments (including post-effective
amendments)  to this  Registration  Statement,  and to file the  same,  with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission,  and hereby grants to such attorneys-in-fact
and agents,  and each of them,  full power and  authority to do and perform each
and every act and thing requisite and necessary to be done in furtherance of the
foregoing,  as fully to all intents and  purposes  as the  undersigned  might or
could  do  in  person,   hereby   ratifying   and   confirming   all  that  said
attorneys-in-fact  and agents,  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.

          Pursuant  to the  requirements  of the  Securities  Act of 1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities indicated on November 26, 1997.

          Signature           Title(s)

/s/  Norman H. Nie
          Norman H. Nie       Chairman of the Board of Directors

/s/  Jack Noonan
          Jack Noonan         President, Chief Executive Officer and Director

/s/  Edward Hamburg
          Edward Hamburg      Executive Vice President, Corporate Operations,
                              Chief Financial Officer and Secretary

/s/  Robert Brinkmann
          Robert Brinkmann    Controller and Assistant Secretary
                              (Chief Accounting Officer)

/s/  Bernard Goldstein
          Bernard Goldstein   Director

/s/  Frederic W. Harman
          Frederic W. Harman  Director

/s/  Merritt Lutz
          Merritt Lutz        Director

/s/  Michael Blair
          Michael Blair       Director

                                     - 26 -

<PAGE>



SPSS INC.

EXHIBIT INDEX


                                                            Location of Document
Exhibit                                                         in Sequential
  No.                 Description of Document                 Numbering System

 2.1      Third Stock Purchase Agreement - Quantime
 2.2      Stock Purchase Agreement - In2itive

 5.1      Opinion of Ross & Hardies regarding legality of 
          shares of Common Stock (includes consent of Ross 
          & Hardies)

15.1      Letter re:  Unaudited Interim Financial Statements

23.1      Consent of KPMG Peat Marwick LLP

24.1      Power of Attorney *


*  Included in signature pages.

                                     - 27 -


                            STOCK PURCHASE AGREEMENT

                                  By and Among

                                    SPSS INC.

                                       and

                      THE SHAREHOLDERS OF QUANTIME LIMITED
                      LISTED ON THE SIGNATURE PAGES HEREOF

                          Dated as of November 21, 1997









<PAGE>



                            STOCK PURCHASE AGREEMENT


         STOCK  PURCHASE  AGREEMENT,   dated  as  of  November  21,  1997,  (the
"Agreement"),  by and among SPSS INC., a Delaware  corporation  ("SPSS") and the
shareholders of Quantime Limited,  a corporation  incorporated under the laws of
England with  Registered  Number  1400578  ("Quantime")  listed on the signature
pages of this Agreement  (hereinafter  collectively referred to as the "Quantime
Shareholders").

                              W I T N E S S E T H:

         WHEREAS,  Quantime  is  engaged  in  the  business  of  developing  and
distributing  market research  software  encapsulating  strong data  collection,
tabulation, on-screen analysis and EIS capabilities;

         WHEREAS,  the respective  Boards of Directors of each of Quantime,  and
SPSS  have  determined  that  it is  advisable  and  for the  benefit  of  their
corporations and their respective shareholders that Quantime be acquired by SPSS
by means of the  acquisition  from the Quantime  Shareholders of the outstanding
capital  shares of  Quantime,  comprised of Class "A" 1 pence  ordinary  shares,
Class  "B" 1 pence  ordinary  shares  and  Class  "C"  US$0.01  ordinary  shares
(collectively, the "Shares") including those represented by bearer warrants (the
"Warrants") held by the Quantime Shareholders,  in exchange for shares of common
stock $.01 par value per share of SPSS (the  "Common  Stock"),  pursuant  to the
terms and conditions set forth herein (the "Acquisition");

         WHEREAS,  on September 30, 1997,  SPSS acquired  96.8384% of the issued
and  outstanding   Shares  from  certain   UK-connected   and  non-UK  connected
shareholders of Quantime (collectively,  the "Majority Shareholders"),  pursuant
to those certain Stock Purchase  Agreements dated as of September 30, 1997 (such
Stock Purchase Agreements are hereinafter collectively referred to as the "Prior
Agreements")  between SPSS, the Majority  Shareholders and Edward Ross,  Richard
Kottler, Norman Grunbaum and Louis Davidson.

         WHEREAS,  the  Quantime  Shareholders  own  of record  and beneficially
3.1616% of the issued and outstanding Shares;

         WHEREAS, for United States federal income tax purposes,  it is intended
that this  transaction  qualify  as a  reorganization  under the  provisions  of
Section  368(a)(1)(B)  of the  Internal  Revenue  Code of 1986,  as amended (the
"Code"), and that for United Kingdom taxation purposes, the transaction likewise
qualify as a reorganization (or the United Kingdom equivalent thereof) under the
provisions of applicable tax laws of the United Kingdom; and

         WHEREAS,  for United States  accounting  purposes,  it is intended that
this transaction be accounted for as a "pooling of interests".

         NOW, THEREFORE,  in consideration of the premises, the mutual covenants
and agreements contained herein, and other good and valuable consideration,  the
receipt and


<PAGE>



sufficiency  of  which  is  hereby  acknowledged,   and  in  reliance  upon  the
representations  and warranties  contained  herein,  the parties hereto agree as
follows:


                                    ARTICLE I

                           TERMS OF PURCHASE AND SALE

         1.1  Purchase  and  Sale  of  the  Shares.  Subject  to the  terms  and
conditions  contained in this  Agreement,  on the Closing  Date (as  hereinafter
defined), the Quantime Shareholders shall sell, assign, transfer and deliver the
Shares  owned by them to SPSS,  and SPSS shall  purchase the Shares owned by the
Quantime Shareholders from the Quantime Shareholders,  for an aggregate purchase
price  consisting  of the items and amounts set forth in Section 1.3 hereof (the
"Purchase  Price") payable pursuant to the terms provided in Section 1.3 hereof.
The Quantime  Shareholders  hereby represent,  warrant and covenant that (a) the
Quantime  Shareholders own and have good title to the Shares,  free and clear of
any lien, pledge, claim, encumbrance, restriction or right of any third party of
any kind;  (b) at the Closing,  SPSS will acquire good title to the Shares owned
by the Quantime  Shareholders  free and clear as  aforesaid,  including  without
limitation  any of the foregoing set forth in the  Memorandum of  Association of
Quantime;  and (c) the Shares owned by the Quantime  Shareholders  represent the
only equity  interest of the  Quantime  Shareholders  in  Quantime.  Each of the
Quantime  Shareholders  waives  any  rights of  pre-emption  and rights of first
refusal in relation to sales or  transfers  of the Shares  owned by the Quantime
Shareholders,   whether  under  the  Articles  of  Association  of  Quantime  or
otherwise.

         1.2 Closing. Subject to the terms and conditions of this Agreement, the
closing of the transactions contemplated hereby (the "Closing") shall take place
at the offices of Berwin  Leighton in London  forthwith on this Agreement  being
executed.

         1.3 Payment of Purchase  Price.  Upon  satisfaction  of all matters set
forth in Article VIII hereof (the  "Closing  Date"),  SPSS shall  deliver to the
Quantime  Shareholders  the Purchase  Price  consisting of 28,175 shares of SPSS
Common Stock (the "Total Shares" or "Acquisition Stock") to be allocated between
the Quantime Shareholders as set forth in Schedule 1.3 hereof. Only whole shares
of SPSS Common Stock will be issued in connection with the Acquisition.  In lieu
of  fractional  shares,  each  Quantime  Shareholder  otherwise  entitled  to  a
fractional  share of SPSS Common  Stock will be paid in cash an amount  equal to
the amount of such fraction multiplied by the closing price of SPSS Common Stock
on September 30, 1997. No such shareholder will be entitled to dividends, voting
rights or other rights in respect of any such fractional share.

         1.4  Tax  and  Accounting.  The  parties  hereto  shall  each  use  all
reasonable  efforts  to cause  the  transactions  contemplated  hereunder  to be
treated as (i) a  reorganization  within the meaning of Section  368(a)(1)(B) of
the  Code,  and  (ii) to  qualify  for  accounting  treatment  as a  pooling  of
interests.

                                        2

<PAGE>





                                   ARTICLE II

                               SECURITIES MATTERS

         2.1      Registration of SPSS Common Stock.

                  (a) SPSS  shall  prepare  and  file  with  the  United  States
Securities and Exchange  Commission  ("SEC") as soon as practicable,  subject to
review by the Quantime  Shareholders,  (but in no event later than 90 days after
the  Closing)  a  registration  statement  on  Form  S-3  and/or  Form  S-4,  as
appropriate   (together  with  all  amendments  and   supplements  to  any  such
registration statement,  including post-effective  amendments,  and all material
incorporated  by  reference  or deemed to be  incorporated  by reference in such
registration statement, the "Registration Statement"),  under the Securities Act
of 1933, and the rules and regulations promulgated thereunder (the "1933 Act" or
the "Act"), for the registration (the  "Registration") of the secondary offering
of the SPSS Common  Stock for the  account of the  Quantime  Shareholders.  SPSS
expects to have published  audited financial  results,  covering at least thirty
(30)  days  of the  combined  operations  of SPSS  and  Quantime  following  the
Acquisition,  not later  than  March 31,  1998.  SPSS  shall use all  reasonable
efforts to have the  Registration  declared  effective by the SEC promptly after
filing.  To the extent that shares of SPSS  Common  Stock are not  acquired by a
Quantime  Shareholder  pursuant to an effective  registration  statement on Form
S-4,  SPSS shall use all  reasonable  efforts to register such SPSS Common Stock
for sale on a delayed or  continuous  basis  under Rule 415 of the 1933 Act and,
provided that Form S-3 shall be available to SPSS for the Registration,  to keep
such Registration  Statement continuously  effective,  current and available for
use by the  Quantime  Shareholders  for a  period  of  twenty-four  (24)  months
following the date of effectiveness,  or such shorter period that will terminate
when all of the  shares of SPSS  Common  Stock  have  been sold by the  Quantime
Shareholders (the "Trading Period").  While any Form S-3 Registration  Statement
remains in effect,  SPSS may at any time  deliver to the  Quantime  Shareholders
written  notice  to the  effect  that  sales  may  not  be  effected  under  the
Registration  Statement for a period of time (the "Blackout  Period") because of
the existence of material  facts not disclosed or  incorporated  by reference in
such Registration Statement and in the then-current prospectus included therein;
upon receipt of any such notice,  the Quantime  Shareholders  shall refrain from
selling any shares of SPSS Common Stock under such Registration  Statement until
they have  received  notice  from SPSS to the effect that such sales may then be
effected.  In no event  shall the  Blackout  Period be greater  than any similar
period of time during which SPSS  restricts any of its employees  from effecting
sales in SPSS  Common  Stock  because of the  existence  of  material  facts not
disclosed  or  incorporated  by  reference  in any  then-effective  registration
statement and in the then-current  prospectus  included therein or otherwise not
publicly disclosed.  SPSS shall promptly update such Registration  Statement and
the  prospectus  included  therein in order to permit the shares of SPSS  Common
Stock to be sold, and the Trading Period shall  automatically be extended by the
aggregate number of days during which the Quantime  Shareholders were instructed
to refrain from selling shares of SPSS Common Stock during all Blackout Periods.


                                        3

<PAGE>



                  (b) The Quantime  Shareholders  shall  cooperate  with SPSS in
connection with the  Registration and shall provide such information and execute
such  documents  as  SPSS  shall  reasonably  request  in  connection  with  the
Registration.

                  (c) SPSS  shall  not  grant to any  holder  of  shares of SPSS
Common Stock registration rights which interfere with the rights of the Quantime
Shareholders and the obligations of SPSS under this Article II.

                  (d) Prior to such date as financial  results covering at least
thirty (30) days of  post-Acquisition  combined  operations of SPSS and Quantime
have  been  published  within  the  meaning  of  Section  201-01  of  the  SEC's
Codification of Financial Reporting Policies (such date is hereinafter  referred
to as the "Earnings  Release Date"),  SPSS will not take any action for which it
would be required to file a Form 8-K under Item 1 or Item 2 thereof.

         2.2 Sales of SPSS Common Stock by the Quantime Shareholders.  If at any
time prior to the  effectiveness  of the  Registration  Statement  any  Quantime
Shareholder  elects to sell all or any of his shares of SPSS Common Stock,  such
Quantime Shareholder shall conduct such sales only through registered securities
brokers ("Brokers").

         2.3 Registration Expenses.  SPSS shall be responsible for and shall pay
all fees,  costs and  expenses  incurred  by it  relating  to the  Registration,
including  without  limitation,   all  SEC  and  securities   exchange,   NASDAQ
registration  and filing fees,  and all fees and expenses of  compliance by SPSS
with the federal  securities laws or any applicable state blue sky laws, but not
including  (i) any fees and  expenses of the Quantime  Shareholders'  counsel or
otherwise incurred by the Quantime Shareholders,  and (ii) underwriters' fees or
expenses,  broker's  costs,  commissions  and other  similar  disposition  costs
associated with the SPSS Common Stock owned by any Quantime Shareholder.

         2.4      Restricted   Stock.    Quantime   has   advised the   Quantime
Shareholders, and the Quantime Shareholders understand and agree, as follows:

                  (a) That the shares of SPSS Common Stock to be received by the
Quantime  Shareholders pursuant to this Agreement are not currently subject to a
registration statement under the Act, and are issued pursuant to exemptions from
registration under the Act which exemptions  depend,  among other things, on the
bona fide nature of their investment intent.

                  (b) That they shall not  transfer  the SPSS Common Stock to be
received  by the  Quantime  Shareholders  pursuant to this  Agreement  except in
compliance with the provisions of the Act. Any proposed transferee of the shares
of SPSS  Common  Stock  shall  agree to take and hold such  securities  upon the
conditions set forth in Section 2.4(c) hereof.

                  (c) Until such time as the shares being sold  hereunder to the
Quantime   Shareholders  may  be  sold  under  Rule  144(k),   each  certificate
representing the shares of SPSS Common Stock issued to the Quantime Shareholders
shall be stamped or otherwise imprinted

                                        4

<PAGE>



with a legend in  substantially  the  following  form (in addition to any legend
required under applicable state securities laws):

                  THE SHARES  REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED
                  IN A PRIVATE PLACEMENT.  SUCH SHARES MAY NOT BE OFFERED,  SOLD
                  OR  TRANSFERRED  IN THE  UNITED  STATES IN THE  ABSENCE  OF AN
                  EFFECTIVE  REGISTRATION  STATEMENT UNDER THE SECURITIES ACT OF
                  1933 OR AN  EXEMPTION  THEREFROM  OR IN  CONTRAVENTION  OF THE
                  AGREEMENT   COVERING   THE   PURCHASE  OF  THESE   SHARES  AND
                  RESTRICTING  THEIR  TRANSFER.  COPIES OF THE  AGREEMENT MAY BE
                  OBTAINED AT NO COST BY WRITTEN  REQUEST  MADE BY THE HOLDER OF
                  RECORD OF THIS  CERTIFICATE TO THE SECRETARY OF THE COMPANY AT
                  ITS PRINCIPAL OFFICE.

When the shares being sold  hereunder to the Quantime  Shareholders  may be sold
under the  circumstances  described  in Rule  144(k) (or any  successor  rule or
regulation)  and there exists no other  restriction on the sale of stock imposed
subsequent  to the  date  hereof,  SPSS  will,  upon  request  of  the  Quantime
Shareholders,  cause SPSS' transfer agent to exchange the shares legended as set
forth above for unlegended shares.

                  (d) Unless a  registration  statement  under the Act  covering
transactions   in  the  SPSS  Common  Stock  to  be  received  by  the  Quantime
Shareholders  pursuant to this Agreement has been declared  effective by the SEC
and such registration statement remains effective at the time of transfer,  each
holder  of  shares  of  SPSS  Common  Stock  to  be  received  by  the  Quantime
Shareholders  pursuant to this  Agreement  shall comply in all respects with the
provisions  of this  Section  2.4.  Prior to any  proposed  transfer of any such
securities,  the  holder  thereof  shall  give  written  notice  to SPSS of such
holder's   intention  to  effect  such   transfer  and  shall  comply  with  the
requirements  set forth in the balance of this  section.  Each such notice shall
describe the manner and  circumstances  of the proposed  transfer in  reasonable
detail,  and shall be accompanied by (i) a written  opinion of legal counsel who
shall be reasonably  satisfactory  to SPSS,  addressed to SPSS,  and  reasonably
satisfactory  in form and  substance  to SPSS'  counsel,  to the effect that the
proposed transfer of such securities may be effected without  registration under
the 1933 Act,  (ii) a "no  action"  letter  from the SEC to the effect  that the
distribution  of such  securities  without  registration  will not  result  in a
recommendation  by the  staff  of the SEC that  action  be  taken  with  respect
thereto,  or (iii) such other showing  satisfactory to SPSS and its counsel that
the proposed  transfer of such securities may be effected  without  registration
under the 1933 Act, whereupon the holder of such securities shall be entitled to
transfer such securities in accordance with the terms of the notice delivered by
the holder to SPSS.

         2.5      Indemnification;  Contribution.   In the event any SPSS Common
Stock  held  by  a  Quantime Shareholder is included in a registration statement
under this Article II:

                                        5

<PAGE>




                  (a) SPSS  will  indemnify  and  hold  harmless  such  Quantime
Shareholder,  any  underwriter  (as  defined  in  the  Act)  for  such  Quantime
Shareholder and each person,  if any, who controls such Quantime  Shareholder or
underwriter  within the meaning of the Act or the 1934 Act,  against any losses,
claims,  damages,  liabilities  (joint or several) or expenses to which they may
become  subject  under  the Act,  the 1934 Act or other  federal  or state  law,
insofar as such  losses,  claims,  damages,  liabilities  (or actions in respect
thereof)  or  expenses  arise  out of or are  based  upon  any of the  following
statements, omissions or violations (collectively a "Violation"): (i) any untrue
statement  or alleged  untrue  statement  of a material  fact  contained in such
registration statement, including any preliminary prospectus or final prospectus
contained therein or any amendments or supplements thereto, (ii) the omission or
alleged omission to state therein a material fact required to be stated therein,
or  necessary  to make the  statements  therein  not  misleading,  or (iii)  any
violation  or  alleged  violation  by SPSS of the Act,  the 1934 Act,  any state
securities law or any rule or regulation promulgated under the Act, the 1934 Act
or  any  state  securities  law;  and  SPSS  will  pay  to  each  such  Quantime
Shareholder,  underwriter  or  controlling  person,  any and all  legal or other
expenses  reasonably  incurred  by  them in  connection  with  investigating  or
defending any such loss, claim, damage, liability, or action; provided, however,
that the indemnity agreement contained in this subsection 2.5(a) shall not apply
to amounts paid in settlement of any such loss, claim, damage, liability, action
or expense if such  settlement  is effected  without the consent of SPSS,  which
consent shall not be unreasonably withheld, nor shall SPSS be liable in any such
case for any such  loss,  claim,  damage,  liability,  action or  expense to the
extent  that it  arises  out of or is based  upon a  Violation  which  occurs in
reliance  upon and in  conformity  with  written  information  furnished by such
Quantime  Shareholder  or any  controlling  person of such Quantime  Shareholder
expressly for use in connection with such registration.

                  (b)      Such  Quantime  Shareholder  will  indemnify and hold
harmless SPSS,  each of its  directors,  each of its officers who has signed the
registration  statement,  each  person,  if any,  who  controls  SPSS within the
meaning of the Act,  any  underwriter,  and any  controlling  person of any such
underwriter, against any losses, claims, damages, liabilities (joint or several)
or expenses to which any of the foregoing persons may become subject,  under the
Act, the 1934 Act or other federal or state law, insofar as such losses, claims,
damages, liabilities (or actions in respect thereto) or expenses arise out of or
are  based  upon any  Violation,  in each  case to the  extent  (and only to the
extent)  that such  Violation  occurs in reliance  upon and in  conformity  with
written information  furnished by such Quantime Shareholder expressly for use in
connection with such  registration;  and such Quantime  Shareholder will pay, as
incurred, any legal or other expenses reasonably incurred by any person intended
to be  indemnified  pursuant  to this  subsection  2.5(b),  in  connection  with
investigating or defending any such loss, claim,  damage,  liability,  action or
expense;  provided,  however,  that the  indemnity  agreement  contained in this
subsection  2.5(b)  shall not apply to amounts  paid in  settlement  of any such
loss, claim, damage, liability, action or expense if such settlement is effected
without the consent of such  Quantime  Shareholder,  which  consent shall not be
unreasonably  withheld  or  delayed;  provided,  that,  in no  event  shall  any
indemnity  under  this  subsection  2.5(b)  exceed the gross  proceeds  from the
offering  of  the  shares  of  SPSS  Common  Stock  received  by  such  Quantime
Shareholder. SPSS

                                        6

<PAGE>



shall make the Registration Statement available to the Quantime Shareholders for
comment prior to the filing thereof.

                  (c) Promptly after receipt by an indemnified  party under this
Section  2.5  of  notice  of  the  commencement  of any  action  (including  any
governmental action), such indemnified party will, if a claim in respect thereof
is to be made against any indemnifying  party under this Section 2.5, deliver to
the  indemnifying  party a written  notice of the  commencement  thereof and the
indemnifying  party shall have the right to  participate  in, and, to the extent
the indemnifying  party so desires,  jointly with any other  indemnifying  party
similarly  noticed,   to  assume  the  defense  thereof  with  counsel  mutually
satisfactory  to the  parties;  provided,  however,  that an  indemnified  party
(together with all other  indemnified  parties which may be represented  without
conflict by one counsel)  shall have the right to retain one  separate  counsel,
with  the  fees  and  expenses  to  be  paid  by  the  indemnifying   party,  if
representation  of  such  indemnified  party  by  the  counsel  retained  by the
indemnifying party would be inappropriate due to a conflict of interests between
such indemnified  party and any other party  represented by such counsel in such
proceeding.  The failure to deliver  written  notice to the  indemnifying  party
within a reasonable time of the commencement of any such action,  if prejudicial
to its ability to defend such action,  shall relieve such indemnifying  party of
any liability to the indemnified party under this Section 2.5.

                  (d) If the  indemnification  provided  for in this Section 2.5
from the indemnifying  party is unavailable to an indemnified party hereunder in
respect of any losses,  claims,  damages,  liabilities  or expenses  referred to
therein,  then the indemnifying  party, in lieu of indemnifying such indemnified
party,  shall contribute to the amount paid or payable by such indemnified party
as a result of such losses,  claims,  damages,  liabilities  or expenses in such
proportion as is appropriate  to reflect the relative fault of the  indemnifying
party and  indemnified  party in connection  with the actions which  resulted in
such losses,  claims,  damages,  liabilities  or expenses,  as well as any other
relevant  equitable  considerations.  The relative  faults of such  indemnifying
party and  indemnified  party shall be  determined  by reference to, among other
things,  whether any action in question,  including any untrue or alleged untrue
statement of a material fact or omission or alleged omission to state a material
fact, has been made by, or relates to information supplied by, such indemnifying
party or indemnified party, and the parties' relative intent, knowledge,  access
to information  and  opportunity  to correct or prevent such action.  The amount
paid  or  payable  by a  party  as a  result  of the  losses,  claims,  damages,
liabilities and expenses  referred to above shall be deemed to include any fees,
charges or expenses  (including fees,  disbursements  and other charges of legal
counsel)  reasonably incurred by such party in connection with any investigation
or  proceeding.  No person  guilty of fraudulent  misrepresentation  (within the
meaning  of  Section  11(f)  of  the  Securities   Act)  shall  be  entitled  to
contribution from any person.

         2.6      Additional   Obligations   of   SPSS.    With  respect  to any
registration hereunder, SPSS shall:


                                        7

<PAGE>



                  (a)  furnish  to the  Quantime  Shareholders  such  numbers of
copies of a prospectus,  including a preliminary prospectus,  in conformity with
the  requirements  of the Act, and such other  documents as they may  reasonably
request in order to facilitate  the  disposition  of shares of SPSS Common Stock
owned by them;

                  (b) use reasonable  efforts to qualify the securities  covered
by such  registration  statement under such other securities or Blue Sky laws of
such  jurisdictions  as shall be reasonably  appropriate for the distribution of
the securities covered by the registration statement;

                  (c) use  reasonable  efforts to notify the NASDAQ Stock Market
of the issuance of the shares of SPSS Common Stock covered by such  registration
statement and list such shares; and

                  (d) notify each Quantime  Shareholder of shares of SPSS Common
Stock under such  registration  statement as promptly as  possible,  at any time
when a prospectus relating thereto is required to be delivered under the Act, of
the  happening of any event of which SPSS has knowledge as a result of which the
prospectus contained in such registration statement, as then in effect, includes
an  untrue  statement  of a  material  fact or omits to  state a  material  fact
required to be stated  therein or necessary to make the  statements  therein not
misleading in light of the circumstances then existing.

         2.7 Reports Under the Exchange Act. With a view to making  available to
the Quantime Shareholders the benefits of Rule 144 promulgated under the Act and
any other rule or  regulation  of the SEC that may at any time permit a Quantime
Shareholder to sell securities of SPSS to the public without registration,  SPSS
agrees to use its reasonable efforts to:

                  (a)      make and keep public information available, as  those
terms are understood and defined in Rule 144, at all times;

                  (b)      file with the SEC in a timely manner all reports  and
other documents required of SPSS under the Act and the Exchange Act; and

                  (c) furnish to any Quantime Shareholder forthwith upon request
a written statement by SPSS that it has complied with the reporting requirements
of Rule  144 and of the Act and the  Exchange  Act,  a copy of the  most  recent
annual or  quarterly  report of SPSS,  and such other  reports and  documents so
filed  by  SPSS  as  may  be  reasonably  requested  in  availing  any  Quantime
Shareholder  of any rule or regulation of the SEC  permitting the selling of any
securities of SPSS held by it without registration.



                                        8

<PAGE>



                                   ARTICLE III

                     REPRESENTATIONS AND WARRANTIES OF SPSS

         SPSS represents and warrants to the Quantime Shareholders as follows:

         3.1  Organization  and  Qualification.   SPSS  is  a  corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Delaware and has the corporate  power and authority to enter into this Agreement
and to consummate the transactions contemplated hereby.

         3.2  Authority.  The execution  and delivery of this  Agreement and the
consummation of the transactions  contemplated hereby have been duly and validly
authorized by SPSS and, no other  corporate  proceedings on the part of SPSS are
necessary  to  authorize  this  Agreement  or  to  consummate  the  transactions
contemplated  hereby.  This  Agreement  has been duly and validly  executed  and
delivered by SPSS and constitute legal, valid and binding agreements of SPSS.

         3.3 Consents and Approvals.  There is no authorization,  consent, order
or approval of, or notice to or filing with, any  individual or entity  required
to be  obtained  or given  in order  for  SPSS to  consummate  the  transactions
contemplated hereby and fully perform its obligations hereunder.

         3.4 Absence of Conflicts.  The execution,  delivery and  performance by
SPSS of this Agreement (including,  without limitation,  the offering,  issuance
and  sale  of the  Acquisition  Stock)  and  the  consummation  by  SPSS  of the
transactions  contemplated hereby will not, with or without the giving of notice
or the lapse of time, or both, (i) violate any provision of law,  statute,  rule
or regulation to which SPSS is or was subject,  (ii) violate any order, judgment
or decree which is or was  applicable to SPSS or (iii)  conflict with, or result
in a breach or  default  under,  any term or  condition  of the  Certificate  of
Incorporation  or By-Laws of SPSS or any agreement or other  instrument to which
SPSS is a party or by which SPSS is bound.

         3.5      Acquisition  Stock.  The Acquisition Stock, when delivered in 
accordance with this  Agreement, shall be duly authorized, validly issued, fully
paid and nonassessable.


                                   ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES OF
                            THE QUANTIME SHAREHOLDERS

         The Quantime  Shareholders  severally  represent and warrant to SPSS as
follows:

         4.1      Authority.  The  Quantime  Shareholders,  on their own behalf,
and the attorneys-in-fact executing and delivering this Agreement  on  behalf of
any such Quantime Shareholders, have

                                       9

<PAGE>



full power,  capacity and  authority  (corporate  or  otherwise)  to execute and
deliver this Agreement, and all documents and instruments executed and delivered
in connection therewith, and to consummate the transactions  contemplated hereby
and  thereby.  The  execution  and  delivery  of this  Agreement  and such other
documents  and the  consummation  of the  transactions  contemplated  hereby and
thereby  have been duly and validly  authorized  and  approved by all  necessary
action on the part of each of the Quantime Shareholders and no other proceedings
(corporate  or otherwise)  on the part of any of the Quantime  Shareholders  are
necessary to authorize  this  Agreement and such  documents or to consummate the
transactions  contemplated  hereby and  thereby.  This  Agreement  and the other
agreements  contemplated  by this Agreement have been duly and validly  executed
and  delivered  by or on  behalf  of  each  of  the  Quantime  Shareholders  and
constitute legal, valid and binding agreements of the Quantime Shareholders.


                                    ARTICLE V

                     COVENANTS OF THE QUANTIME SHAREHOLDERS

         The Quantime Shareholders, jointly and severally, covenant as follows:

         5.1 Consents and Approvals.  The Quantime Shareholders agree to use all
reasonable efforts to make all registrations, filings and applications, and give
all notices and obtain all governmental and other consents,  approvals,  orders,
qualifications  and waivers  necessary for the  consummation of the transactions
contemplated by, or the performance by the Quantime Shareholders of any of their
obligations under, this Agreement,  or which may become reasonably  necessary or
desirable in connection  with any of the foregoing,  in each case upon terms and
conditions  reasonably  satisfactory  to SPSS  and  its  counsel.  The  Quantime
Shareholders  waive  any  pre-emption  rights  and  rights of first  refusal  in
relation to the Shares, whether under the Articles of Association of Quantime or
otherwise.

         5.2 Cost of Shares.  Upon request by SPSS,  the  Quantime  Shareholders
will provide SPSS with information relating to, and including, the consideration
paid  by the  Quantime  Shareholders  for  the  Shares  owned  by  the  Quantime
Shareholders at the time of acquisition of such Shares.

         5.3 Further  Assurances.  The Quantime  Shareholders shall from time to
time,  at the  request  of SPSS and  without  further  cost or  expense to SPSS,
execute and deliver such other documents and take such other actions as shall be
reasonably  necessary  or  appropriate  to  consummate  fully  the  transactions
contemplated hereby.

         5.4 Power of Attorney.  Pending the entry of SPSS onto Quantime's share
register,  each of the Quantime  Shareholders  will grant to SPSS an irrevocable
power of  attorney  to  exercise  all rights  relating to the Shares to the same
extent  and with the same  effect  as if SPSS  had been  entered  on such  share
register.


                                       10

<PAGE>




                                   ARTICLE VI

                                COVENANTS OF SPSS

         SPSS covenants as follows:

         6.1  Further  Assurances.  SPSS  shall  from time to time  execute  and
deliver such other  documents and take such other actions as shall be reasonably
necessary or  appropriate  to  consummate  fully the  transactions  contemplated
hereby.


                                   ARTICLE VII

                                MUTUAL COVENANTS

         Each of the parties hereto covenants as follows:

         7.1 Confidentiality. Except as otherwise required by law or judicial or
administrative  proceedings,  including  proceedings  between the  parties  with
respect to the  transactions  contemplated  hereby,  and then only to the extent
specifically  required by such proceedings,  and except for public announcements
on the advice of counsel,  each of the parties  agrees not to (i)  disclose  any
Confidential  Information (defined hereinbelow) of any other party, or the terms
of this  Agreement,  to any  individual  or entity  (other  than its  directors,
officers,  employees,  agents  and  representatives  with a need  to  know  such
Confidential  Information in order to consummate the  transactions  contemplated
hereby and then only if reasonable steps are taken with such parties to preserve
the  confidentiality  thereof) or (ii) use any Confidential  Information for any
purpose  other than,  with  respect to SPSS  operating  the  acquired  business.
"Confidential  Information" shall mean any secret or confidential information of
the  software  business  of  Quantime  or SPSS,  including,  but not limited to,
customer information,  financial information,  technical information, details or
information  concerning contracts,  trade secrets,  marketing information or any
other  data,  information  or  proprietary  information  of or  relating  to the
software  business  of  Quantime  or SPSS or any  affiliate  thereof,  or  their
respective products or services. No obligations shall exist under this Agreement
with respect to Confidential  Information that (i) is publicly known at the time
of the  disclosure or becomes  publicly known through no wrongful act or failure
of Quantime,  the Quantime  Shareholders  or SPSS,  (ii) is disclosed by a third
party which does not have a confidential  relationship with either Quantime, the
Quantime  Shareholders  or SPSS,  and which was  rightfully  acquired by a third
party,  or (iii) is legally  compelled to be  disclosed  pursuant to a subpoena,
summons,  order or other  judicial or  governmental  process,  provided that the
parties hereto provide  prompt notice of any such  subpoena,  summons,  order or
other judicial or governmental process to such other parties of the Confidential
Information, so as to allow the parties an opportunity to oppose such process.

         7.2      Consistent Tax Reporting.  The parties agree for tax  purposes
to report the  transactions  contemplated  by this  Agreement,  and to treat any
subsequent related transactions

                                       11

<PAGE>



or items,  in a manner  consistent in all respects with the terms and provisions
of this  Agreement.  Each  party  shall  cooperate  with the  other  parties  as
appropriate  for  all  relevant  tax  purposes   relating  to  the  transactions
contemplated by this Agreement.


                                  ARTICLE VIII

                               CLOSING DELIVERIES

         The following deliveries shall be made at the Closing:

         8.1      Delivery  of  Share  Certificates  and  Stock  Transfers.  The
Quantime  Shareholders  shall deliver to SPSS the share certificates and related
signed stock transfers in respect of the other Shares.

         8.2      Delivery of Closing Documents. The Quantime Shareholders shall
deliver to SPSS all other instruments and documents required hereunder.

         8.3  Consents.  The  Quantime  Shareholders  shall  deliver to SPSS all
consents  and  approvals  required in  connection  with the  performance  by the
Quantime  Shareholders of their respective  obligations under this Agreement and
the consummation by the Quantime  Shareholders of the transactions  contemplated
hereby and thereby. SPSS shall deliver to the Quantime Shareholders all consents
and  approvals  required  in  connection  with  the  performance  by SPSS of its
obligations   under  this  Agreement  and  the   consummation  by  SPSS  of  the
transactions contemplated hereby and thereby.

         8.4 Repayment of Amounts Owed. The Quantime  Shareholders  shall repay,
or cause to be repaid, all amounts owing on the Closing Date to Quantime and the
subsidiaries of Quantime from the directors of any of them and from the Quantime
Shareholders, whether due for payment or not.

         8.5  Resolutions  of  Certain  Quantime  Shareholders.   Each  Quantime
Shareholder  that is not an individual or is not acting  individually and on his
or her own  behalf,  shall  execute and  deliver to SPSS  certified  resolutions
authorizing  the  execution and delivery by such  Quantime  Shareholder  of this
Agreement and the documents  related  thereto,  and performance by such Quantime
Shareholder of the transactions contemplated hereby and thereby.

         8.6  Further  Assurances.  Each  party  shall  deliver,  or cause to be
delivered,  all other documents required to be delivered by it at the Closing to
the other  party and shall take all other  actions  which the other  parties may
reasonably  determine  necessary or appropriate in order to consummate fully the
transactions contemplated hereby.



                                       12

<PAGE>



                                   ARTICLE IX

                          SURVIVAL AND INDEMNIFICATION

         9.1  Survival  of  Representations  and  Warranties:   Covenants.   All
representations and warranties  contained herein or made in writing by any party
in connection  herewith  shall survive the Closing Date until the earlier of the
first  anniversary  of the Closing Date or the date of delivery to SPSS of SPSS'
year-end  audited  financial  statements by SPSS'  outside  auditors (the "Audit
Release  Date").  All covenants  contained  herein shall survive until performed
fully.

         9.2      Indemnification.

                  (a) Subject to and as modified by Section 9.2(b), the Quantime
Shareholders  agree to  indemnify  and  hold  SPSS  and its  affiliates  and the
respective officers, directors, employees, agents and representatives of each of
the foregoing  (collectively,  the "Representatives")  harmless from and against
any and all costs,  expenses,  losses,  claims,  damages,  interest,  penalties,
fines,  liabilities and  obligations  whenever  arising or incurred  (including,
without  limitation,  amounts paid in  settlement,  costs of  investigation  and
attorneys'  fees  and  expenses)  (individually,  a  "Loss,"  and  collectively,
"Losses")  arising  out of or  relating  to any  breach  of any  representation,
warranty or covenant made by the Quantime Shareholders set forth herein.

                  (b) The  aggregate of all  indemnities  to be provided to SPSS
pursuant to this Article IX (an  "Indemnification  Payment") shall not exceed an
amount   equal  to  ten  percent   (10%)  of  the  Total   Shares  (the  "Cap").
Notwithstanding  the  foregoing,  the Cap  shall  not  apply to the  indemnities
provided in this Agreement for any fraud,  willful misconduct,  gross negligence
or  criminal  action on the part of the  Quantime  Shareholder  engaging in such
fraud,   willful   misconduct,   gross  negligence  or  criminal   action,   and
notwithstanding  anything contained or implied in this Agreement,  the indemnity
obligations  set forth herein above in this  sentence  shall survive the Closing
without  limitation except as provided by the applicable  statute of limitations
(including any extension of said statute of limitations).

         9.3  Indemnification  by SPSS.  SPSS agrees to  indemnify  and hold the
Quantime   Shareholders  and  their  affiliates  and  the  respective  officers,
directors,  employees,  agents  and  representatives  of each  of the  foregoing
harmless  from and  against  any and all  Losses  relating  to any breach of any
representation,   warranty   or  covenant   of  SPSS  set  forth   herein.   Any
indemnification  made by SPSS under  this  section  9.3 shall be in SPSS  Common
Stock, valued at the closing price of SPSS Common Stock on September 30, 1997.

         9.4  Indemnification  Procedure.  (a) An  indemnified  party under this
Article IX shall give prompt written notice to the indemnifying  party (when and
to the extent that the indemnified  party has actual  knowledge  thereof) of any
condition,  event or  occurrence  or the  commencement  of any  action,  suit or
proceeding  for  which  indemnification  may  be  sought,  and  through  counsel
reasonably  satisfactory  to the  indemnified  party,  shall  assume the defense
thereof or other

                                       13

<PAGE>



indemnification  obligation with respect thereto;  provided,  however,  that any
indemnified  party shall be entitled to participate in any such action,  suit or
proceeding with counsel of its own choice but at its own expense;  and provided,
further, that any indemnified party shall be entitled to participate in any such
action,  suit or proceeding with counsel of its own choice at the expense of the
indemnifying party, if, under applicable canons of ethics,  joint representation
of the  indemnifying  party and the  indemnified  party  presents a conflict  of
interest.

         In any event,  if the  indemnifying  party  fails to assume the defense
within a reasonable time, the indemnified party may assume such defense or other
indemnification obligation and the reasonable fees and expenses of its attorneys
will be covered by the  indemnity  provided for  hereunder.  No action,  suit or
proceeding  for which  indemnification  may be sought  shall be  compromised  or
settled  in any  manner  which  might  adversely  affect  the  interests  of the
indemnifying  party without the prior written consent of the indemnifying  party
(which  shall  not  be  unreasonably  withheld);  provided,  however,  that  the
indemnified  party  may  settle  any  claim  or  cause  of  action  without  the
indemnifying  party's consent, but in such case the indemnifying party shall not
be required to reimburse the indemnified  party for its Losses except and to the
extent that the results of arbitration, conducted in accordance with Section 9.5
hereof,  determines that the  indemnifying  party must indemnify the indemnified
party  therefor.  Notwithstanding  anything in this Section 9.4 to the contrary,
the  indemnifying  party  shall not,  without the prior  written  consent of the
indemnified  party,  (i) settle or compromise any action,  suit or proceeding or
consent to the entry of any judgment which does not include as an  unconditional
term thereof the delivery by the claimant or plaintiff to the indemnified  party
of a written  release  from all  liability  in respect of such  action,  suit or
proceeding  or (ii) settle or compromise  any action,  suit or proceeding in any
manner that may materially and adversely affect the indemnified party other than
as a result of money damages or other money  payments.  The  indemnifying  party
shall pay all expenses,  including  attorneys' fees, that may be incurred by any
indemnified party in enforcing the indemnity provided for hereunder.

         9.5  Arbitration.  Any  dispute as to any claims  under this  Agreement
shall be settled by arbitration in  Wilmington,  Delaware by three  arbitrators,
one of whom shall be appointed by the Quantime Shareholders, one by SPSS and the
third of whom shall be appointed by the first two  arbitrators.  If either party
fails to  appoint  an  arbitrator  within 30 days of a request in writing by the
other  party  to do so or if the  first  two  arbitrators  cannot  agree  on the
appointment of a third arbitrator within 20 days of their designation, then such
arbitrator  shall be appointed by the Chief Judge of the United States  District
Court for the District of Delaware.  Except as to the  selection of  arbitrators
which shall be as set forth above, the arbitration  shall be conducted  promptly
and  expeditiously  in accordance with the commercial  arbitration  rules of the
American  Arbitration  Association so as to enable the  arbitrators to render an
award  within  90  days  of the  commencement  of the  arbitration  proceedings.
Judgment upon the award rendered by the  arbitrators may be entered in any court
having  jurisdiction  thereof.  The costs of the  arbitration and the arbitrator
shall be allocated as provided in the results of the arbitration.

         9.6      Treatment  as  Adjustment  of  Purchase  Price.  Any indemnity
payment received by a party hereunder shall be treated as an  adjustment  of the
purchase price.  However, in the event

                                       14

<PAGE>



that the Internal Revenue Service,  Inland Revenue or any other taxing authority
determines that such indemnity payment constitutes taxable gain or income to the
indemnified  party, the  indemnifying  party shall increase the amount otherwise
required to be paid so that the  indemnified  party,  receives,  on an after-tax
basis,  an amount equal to the amount it would have  received had the  indemnity
not resulted in taxable gain or income.

         9.7 Limited  Remedies.  SPSS shall have no cause of action  against the
Quantime  Shareholders  for matters arising out of the sale to SPSS of Shares of
Quantime other than the contractual  remedies  contained  herein or in ancillary
documents   executed  and   delivered  in  connection   with  the   transactions
contemplated  hereby,  and claims  sounding  in fraud,  misrepresentation  under
United  States  laws,   equitable   estoppel  and  promissory   estoppel.   SPSS
acknowledges  that it has not been  induced to enter into this  Agreement by any
representation,  warranty,  promise or assurance by the Quantime Shareholders or
any other person other than those specifically contained in this Agreement or in
ancillary  documents  executed and delivered in connection  with the transaction
contemplated hereby.


                                    ARTICLE X

                                  MISCELLANEOUS

         10.1     Amendment and Modification.  Subject  to  applicable law, this
Agreement  may be amended, modified and supplemented by written agreement of the
parties.

         10.2 Waiver of Compliance.  Any failure of the Quantime Shareholders on
the one hand, or SPSS, on the other, to comply with any obligation herein may be
expressly waived hereunder, but such waiver shall not operate as a waiver of, or
estoppel with respect to, any subsequent or other failure. Any waiver must be in
writing and duly executed by the appropriate parties.

         10.3 Expenses.  Payment of the reasonable fees and expenses incurred by
the Quantime  Shareholders  solely in  connection  with the  Acquisition  of the
Shares of the Quantime  Shareholders under this Agreement shall be made by SPSS.
SPSS agrees to pay the fees and disbursements of Simmons & Simmons in acting for
the Quantime Shareholders in relation to this Agreement.

         10.4 Notices. All notices,  requests,  demands and other communications
required or permitted  hereunder shall be in writing and shall be deemed to have
been duly given when  delivered  by hand or by facsimile  transmission  (receipt
confirmed), one day after being sent by recognized overnight courier or delivery
service,  freight  prepaid,  or five  days  after  being  mailed,  certified  or
registered mail, postage prepaid, return receipt requested:


                                       15

<PAGE>



                  (a)      If to  I.M. Katz,  G. Haslam,  A.D. Renny,  M. Klein,
H.J.S.  Dyer,  S. Wooderson,  J. Rabson  and/or R. Phillips,  addressed to  such
Quantime Shareholder, to:

                           c/o Quantime Limited
                           Maygrove House
                           67 Maygrove Road
                           London NW6 2EG, ENGLAND
                           Facsimile No.:  44 171 624 5297

                  (b)      If to J. Almonacid, to:

                           J. Almonacid
                           c/o Quantime S.A. de C.V.
                           Paseo de la Reforma
                           90-4 Piso
                           Suite 405
                           Colonia Juarez
                           Mexico DF 06600
                           Facsimile No.:  00 52 5 535 6657

                  (c)      If to Min Charitable Trust, to:

                           Min Charitable Trust
                           c/o Brown & Wood
                           Princes Court
                           7 Princes Street
                           London EC2R 8AQ, ENGLAND
                           Attention:  Richard Cassell
                           Facsimile No.:  0171 796 1807

                           as to each of (a), (b) and (c), with a copy to:

                           Simmons & Simmons
                           14 Dominion Street
                           London EC2M 2RJ, ENGLAND
                           Attention:  Jane Newman/Catherine Moss
                           Facsimile No.:  0171 628 2070

or to such other person or address as the Quantime Shareholders shall furnish to
SPSS in writing by notice given in the manner set forth above.


                                       16

<PAGE>



                  (b)      If to SPSS, to:

                           SPSS Inc.
                           444 North Michigan Avenue
                           Chicago, Illinois  60611
                           Attention: Mr. Edward Hamburg
                           Facsimile No.:  (312) 329-3558

                           with a copy to:

                           Ross & Hardies
                           150 North Michigan Avenue, Suite 2500
                           Chicago, Illinois  60601
                           Attention: T. Stephen Dyer, Esq.
                           Facsimile No.:  (312) 750-8600

or to such  other  person or  address  as SPSS  shall  furnish  to the  Quantime
Shareholders in writing by notice given in the manner set forth above.

         10.5 Assignment.  This Agreement and all of the provisions hereof shall
be  binding  upon and  inure to the  benefit  of the  parties  hereto  and their
respective  successors and permitted assigns, but neither this Agreement nor any
of the rights,  interests or obligations  hereunder  shall be assigned by any of
the parties  hereto  without  the prior  written  consent of the other  parties,
except by  operation  of law and  except  that SPSS may  assign  its  rights and
obligations  under this  Agreement to any other entity  wholly owned by SPSS. If
such assignment  shall be made by SPSS, the assignee shall be entitled to all of
the rights and shall assume all of the obligations of SPSS hereunder,  provided,
that SPSS shall remain liable for and guarantee the performance of such entity's
obligations  under this  Agreement and shall issue to the Quantime  Shareholders
the SPSS Common Stock as provided herein.

         10.6 Publicity.  Neither the Quantime  Shareholders nor SPSS shall make
or issue, or cause to be made or issued,  any announcement or written  statement
concerning  this  Agreement  or  the   transactions   contemplated   hereby  for
dissemination  to the general  public,  without the prior written consent of the
other parties,  nor shall the Quantime  Shareholders cause or permit Quantime to
do so. This provision shall not apply,  however,  to any announcement or written
statement  required to be made by law, the  regulations  of any federal or state
governmental  agency or any stock  exchange,  except that the party  required to
make such announcement shall, whenever practicable, consult with the other party
concerning the timing and content of such announcement  before such announcement
is made.

         10.7  Headings.  The  Article and Section  headings  contained  in this
Agreement are inserted for convenience  only and shall not affect in any way the
meaning or interpretation of this Agreement.


                                       17

<PAGE>



         10.8  Severability.  If  any  provision  of  this  Agreement  shall  be
determined  to be contrary  to law and  unenforceable  by any court of law,  the
remaining provisions shall be severable and enforceable in accordance with their
terms.

         10.9 Governing  Law. This Agreement  shall be governed by and construed
in  accordance  with the laws of the State of  Delaware,  without  regard to its
conflicts of law doctrine. The parties hereto expressly submit themselves to the
non-exclusive  jurisdictions of the State and Federal Courts of Illinois for the
resolution  of any disputes  which may arise under or with respect to compliance
with this Agreement.

         10.10  Counterparts.  This Agreement may be executed  simultaneously in
two or more counterparts,  each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

         10.11 Third  Parties.  Nothing herein shall be construed to confer upon
or give to any party  other  than the  parties  hereto and their  successors  or
permitted assigns, any rights or remedies under or by reason of this Agreement.

         10.12 References to Laws. References to particular statutes within this
Agreement,  to the extent such references  relate to laws other than the laws of
the United States or any particular  State thereof,  are intended to refer,  and
shall be construed as referring, to laws of the United Kingdom.

         10.13 Entire  Agreement.  This  Agreement,  including  the Exhibits and
Schedules  hereto,  sets forth the entire  agreement  and  understanding  of the
parties hereto in respect of the subject matter contained herein, and supersedes
all prior agreements, covenants,  representations or warranties, whether oral or
written, by any party hereto.

         10.14  Trustees.  To the  extent  signatories  hereto are  trustees  or
attorneys-in-fact,  the  parties  acknowledge  and agree that such  persons  are
executing and  delivering  this  Agreement  and  consummating  the  transactions
contemplated   hereby   solely  in  their   capacity   as  such   trustees   and
attorneys-in-fact  and not  individually,  and further,  that said  trustees and
attorneys-in-fact shall have no personal liability in connection therewith. With
respect to Quantime  Shareholders which are trusts or foundations,  claims under
the  Agreement  are limited to trust assets and the Shares and no claims will be
made  against  the  trustees,  attorneys-in-fact  and  officers  acting in their
capacity as such.  The  provisions  of this Section 10.14 shall apply with equal
force to and shall be deemed to be  incorporated  by reference in all  ancillary
documents  signed by signatories who are trustees or  attorneys-in-fact  and who
execute any ancillary documents in connection with the transactions contemplated
by this Agreement.

         10.15  Investment in the Common Stock.  As of the Closing Date, each of
the  Quantime  Shareholders  (as to himself  or herself  and not as to any other
Quantime  Shareholder):  (i) has received and carefully  reviewed  copies of the
SPSS  Reports  (hereinafter  defined);  (ii) has  evaluated,  and/or  his or her
business, tax and/or other legal advisors have evaluated and advised

                                       18

<PAGE>



such  Quantime  Shareholder  as to the  merits,  disadvantages  and  risks of an
investment in SPSS Common Stock; (iii) acknowledges that, in reliance upon these
representations,  SPSS is not  registering the issuance of the SPSS Common Stock
under the Act prior to the Closing Date; (iv)  acknowledges that the SPSS Common
Stock may not be resold  except in a transaction  which is registered  under the
Act or which is exempt from such  registration  requirements  and that SPSS will
cause a legend setting forth such  restrictions to be placed on each certificate
representing  the SPSS Common Stock and will make  appropriate  notations in its
records  and the  records  of its  transfer  agent  with  respect  thereto;  (v)
recognizes the  speculative  nature of the SPSS Common Stock and is able to bear
the economic risk of the  investment he or she is making in SPSS Common Stock by
reason of the transactions contemplated by this Agreement; (vi) is acquiring the
SPSS Common  Stock for his or her own  account,  as  principal,  for  investment
purposes only and without a view to the resale,  transfer or other  distribution
thereof  except in a sale  registered  under the Act or in a transaction  exempt
from the  registration  requirements  of the Act;  (vii)  acknowledges  that the
Acquisition Stock of SPSS being acquired pursuant to the terms of this Agreement
represents  an  investment  in the  business of SPSS,  and that SPSS has made no
representations or warranties with respect to the future business performance of
SPSS or the  price  of its  Common  Stock;  and  (viii)  has  been  afforded  an
opportunity  to ask  questions  and  receive  answers  concerning  SPSS  and its
operations,  business  and  financial  condition,  the SPSS Common Stock and the
terms  and  conditions  of  this  Agreement  and  has  received  any  additional
information   concerning  SPSS  and  its  operations,   business  and  financial
condition,  the  SPSS  Common  Stock  and  this  Agreement  that  such  Quantime
Shareholder has reasonably requested.


                                       19

<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and delivered as an agreement under hand (in the case of SPSS) and
as a deed (in the case of the Quantime Shareholders), all as of the day and year
first written above.


SPSS:

SPSS INC., a Delaware corporation



By:  /s/ Jack Noonan
         Name:   Jack Noonan
         Title:  President




                                       20

<PAGE>



THE QUANTIME SHAREHOLDERS:



/s/ I.M. KATZ                          /s/ G. Haslam
I.M. KATZ                              G. HASLAM



/s/ A.D. Renny                         /s/ M. Klein
A.D. RENNY                             M. KLEIN



/s/ H.J.S. Dyer                        /s/ S. Wooderson
H.J.S. DYER                            S. WOODERSON



/s/ J. Rabson                          /s/ R. Phillips
J. RABSON                              R. PHILLIPS



/s/ J. Almonacid              
J. ALMONACID
                                       TRUSTEES OF MIN CHARITABLE TRUST


                                       By:      /s/ Richrad A. Cassell
                                                Name: Richard A. Cassell
                                                Title:           Trustee


                                       By:
                                                Name:
                                                Title:

                                       21

<PAGE>


                                  SCHEDULE 1.3


Min Charitable Trust                                       16,007
I.M. Katz                                                   9,530
G. Haslam                                                     609
A.D. Renny                                                    536
M. Klein                                                      432
H.J.S. Dyer                                                   254
S. Wooderson                                                  229
J. Rabson                                                     229
J. Almonacid                                                  197
R. Phillips                                                   152

                                       22




                                                                     EXHIBIT 2.2

                            STOCK PURCHASE AGREEMENT


                                  By and Among



                                   SPSS INC.,


                         JENS NIELSEN, HENRIK ROSENDAHL,
                OLE STANGEGAARD, LARS THINGGAARD, EDWARD O'HARA,
                            BJORN HAUGLAND, 2M INVEST


                    and the Shareholders listed on Exhibit A



                          Dated as of November 21, 1997










<PAGE>



                            STOCK PURCHASE AGREEMENT


         THIS STOCK  PURCHASE  AGREEMENT,  dated as of November 21,  1997,  (the
"Agreement"), by and among Jens Nielsen, Henrik Rosendahl, Ole Stangegaard, Lars
Thinggaard,  Edward O'Hara,  Bjorn Haugland,  2M Invest (the "Key Shareholders")
and  certain  other  shareholders  of  In2itive  listed on Exhibit A (when taken
together  with the Key  Shareholders,  the  "Shareholders"),  and SPSS  Inc.,  a
Delaware corporation ("SPSS").

                               W I T N E S E T H:

         WHEREAS,  In2itive Technologies A/S, a Danish corporation  ("In2itive")
is engaged in the business of developing and distributing software;

         WHEREAS,  the respective  Boards of Directors of In2itive and SPSS have
determined  that it is advisable and for the benefit of their  corporations  and
their respective  shareholders that In2itive be acquired by SPSS by means of the
acquisition of all the  outstanding  capital stock of In2itive,  DKK50 par value
per share,  on the terms and conditions set forth  hereinafter  (the  "Shares"),
held by the Shareholders in exchange for shares of common stock,  $.01 par value
per share of SPSS (the "SPSS Common  Stock"),  to be determined  pursuant to the
terms set forth herein;

         WHEREAS,  the  Shareholders  own  of record and beneficially all of the
issued and outstanding Shares; and

         WHEREAS, for accounting purposes,  it is intended that this transaction
be accounted for as a "pooling of interests".

         NOW, THEREFORE,  in consideration of the premises, the mutual covenants
and agreements contained herein, and other good and valuable consideration,  the
receipt and  sufficiency of which is hereby  acknowledged,  and in reliance upon
the representations and warranties contained herein, the parties hereto agree as
follows:


                                    ARTICLE I
                           TERMS OF PURCHASE AND SALE

                  1.1 Purchase and Sale of the Shares.  Subject to the terms and
conditions  contained in this Agreement and the attached  schedules  which shall
form an integral  part of this  Agreement,  on the Closing Date (as  hereinafter
defined),  the Shareholders shall sell, assign,  transfer and deliver the Shares
to SPSS and SPSS  shall  purchase  the  Shares  from the  Shareholders,  for the
aggregate  purchase price set forth in Section 1.2 hereof (the "Purchase Price")
payable pursuant to the terms provided in Section 1.2 hereof.

                  1.2         Payment of Purchase Price.       Upon satisfaction
of all the terms and conditions set forth in this Agreement, on the Closing date
SPSS shall deliver the Purchase Price.


<PAGE>



consisting  of 145,000  shares of SPSS  Common  Stock,  reduced by the number of
shares of SPSS  Common  Stock  having an  aggregate  value on the  Closing  Date
(calculated  based upon the closing  price of SPSS  Common  Stock on November 3,
1997) not to exceed $99,163,  representing  the fees and expenses to be borne by
the  Shareholders in respect hereof and paid by SPSS, as more fully described in
Section  16.3  hereof  (the  "Total  Shares"),  to be  paid as  follows  (a) the
Shareholders  shall  receive an aggregate of ninety  percent  (90%) of the Total
Shares to be  allocated  between the  Shareholders  as set forth in Schedule 1.2
hereof,  and (b) ten percent (10%) of the Total Shares (the  "Escrowed  Shares")
shall be held in escrow in accordance with Article III hereof. Only whole shares
of SPSS Common Stock will be issued in connection with the Acquisition.  In lieu
of fractional shares, each Shareholder  otherwise entitled to a fractional share
of SPSS Common  Stock will be paid in cash an amount equal to the amount of such
fraction  multiplied  by the closing  price of SPSS Common  Stock on November 3,
1997. No such shareholder will be entitled to dividends,  voting rights or other
rights in respect of any such fractional share.

                  1.3  Closing.  Subject  to the  terms and  conditions  of this
Agreement,  the closing of the transactions  contemplated hereby (the "Closing")
shall  take place at the  offices  of  Gorrissen  Federspiel  Kierkegaard,  H.C,
Copenhagen,  Denmark, at 9:00 a.m., on November 21, 1997 (the "Closing Date") or
such other place or time as the parties may agree.

                  1.4         Accounting.   The parties hereto  shall  each  use
their best efforts to cause the transactions  contemplated hereunder to  qualify
for accounting treatment as a pooling of interests.


                                   ARTICLE II

                          SHAREHOLDERS' REPRESENTATIVE

                  2.1 In order to administer  efficiently (i) the implementation
of the  Agreement by the  Shareholders,  (ii) the waiver of any condition to the
obligations  of the  Shareholders  to consummate the  transactions  contemplated
hereby,  and (iii) the  settlement of any dispute with respect to the Agreement,
the Shareholders hereby designate Ole Stangegaard,  as their representative (the
"Shareholders' Representative").

                  2.2  The  Shareholders   hereby  authorize  the  Shareholders'
Representative  (i)  to  take  all  action  necessary  in  connection  with  the
implementation of the Agreement on behalf of the Shareholders, the waiver of any
condition to the obligations of the  Shareholders to consummate the transactions
contemplated hereby, or the settlement of any dispute,  (ii) to give and receive
all notices  required to be given under the  Agreement and (iii) to take any and
all  additional  action  as is  contemplated  to be taken by or on behalf of the
Shareholders by the terms of this Agreement.  Such authorization  granted by the
shareholders to the  Shareholders'  Representative  shall remain effective until
December 31, 1998.


                                        2

<PAGE>




                  2.3 In the  event  (i) that the  Shareholders'  Representative
dies, becomes legally  incapacitated or resigns from such position, or (ii) upon
a written consent executed by at least 66 2/3% in interest  (calculated based on
the  allocation set for in Schedule 1.2 hereof,  notwithstanding  any subsequent
change  in  shareholdings  by way  of  sale,  etc.)  of  the  Shareholders,  the
Shareholders  may designate a replacement to the  Shareholders'  Representative;
however, no change in the Shareholders'  Representative shall be effective until
SPSS is given notice of it by the Shareholders.

                  2.4  All   decisions   and   actions   by  the   Shareholders'
Representative shall be binding upon all of the Shareholders, and no Shareholder
shall have the right to object, dissent,  protest or otherwise contest the same,
in  the  absence  of  fraud,  gross  negligence  or  willful  misconduct  of the
Shareholders' Representative.

                  2.5    By their execution of this Agreement, the Shareholders 
agree that:

                            (i) SPSS shall be able to rely  conclusively  on the
         instructions and decisions of the  Shareholders'  Representative  as to
         any actions  required or permitted to be taken by the  Shareholders  or
         the  Shareholders'  Representative  hereunder,  and no party  hereunder
         shall have any cause of action  against  SPSS for any  action  taken by
         SPSS  in  reliance   upon  the   instructions   or   decisions  of  the
         Shareholders' Representative;

                           (ii) all actions,  decisions and  instructions of the
         Shareholders'  Representative  shall be conclusive and binding upon all
         of the  Shareholders;  no  Shareholder  shall  have any cause of action
         against  SPSS or In2itive  for any action taken or omitted to be taken,
         decision made or omitted to be made or any instruction given or omitted
         to be given by the  Shareholders'  Representative;  and no  Shareholder
         shall have any cause of action against the Shareholders' Representative
         for any  action  taken,  decision  made  or  instruction  given  by the
         Shareholders'  Representative  under this Agreement,  except for fraud,
         gross   negligence  or  willful   breach  of  this   Agreement  by  the
         Shareholders' Representative;

                          (iii) remedies  available at law for any breach of the
         provisions of this Section 2.5 are inadequate; therefore, SPSS shall be
         entitled to  temporary  and  permanent  injunctive  relief  without the
         necessity  of proving  damages if SPSS  brings an action to enforce the
         provisions of this Section 2.5; and

                           (iv)  the   provisions   of  this   Section  2.5  are
         independent  and severable,  shall  constitute an irrevocable  power of
         attorney,  coupled with an interest and surviving death, granted by the
         Shareholders to the Shareholders'  Representative  and shall be binding
         upon the executors, heirs, legal representatives and successors of each
         Shareholder.


                                        3

<PAGE>



                                   ARTICLE III

                                     ESCROW

                  3.1 Escrow. At Closing,  SPSS shall cause to be issued, in the
name of each  Shareholder  newly issued shares of SPSS Common Stock as set forth
on Schedule 3.1. SPSS will hold in escrow for the Shareholders'  account, in the
respective amounts set forth on Schedule 3.1, the Escrowed Shares, together with
stock powers duly executed in blank  attached,  in good form for delivery.  SPSS
will hold the Escrowed Shares subject to the terms and conditions of Section 3.2
hereof.

                  3.2 Escrowed  Shares.  Upon the Closing Date, the Shareholders
shall,  pledge,  and grant a first  priority  security  interest in the Escrowed
Shares to SPSS as  collateral  to satisfy any  post-Closing  claims for breaches
under this Agreement.  Escrowed Shares used to satisfy any  post-Closing  claims
for breaches under this Agreement  shall be divided on a pro-rata basis from the
Shareholders.  The  number  of  Escrowed  Shares,  if any,  remaining  after any
retention  made in  accordance  with this  Agreement  will be  delivered  to the
Shareholders,  in amounts  proportionate to the  Shareholders'  interest in such
Escrowed  Shares,  promptly  after the earlier of the first  anniversary  of the
Closing Date or the date of delivery to SPSS of SPSS' year-end audited financial
statements by SPSS' outside auditors (the "Audit Release Date"),  except for the
number of such Escrowed  Shares then subject to a bona fide dispute over which a
party is entitled to such Escrowed Shares.


                                   ARTICLE IV

                               SECURITIES MATTERS

                  4.1         Registration of SPSS Common Stock.

                  (a) SPSS shall prepare and file with United States  Securities
         and Exchange  Commission  (the "SEC") as soon as practicable  but in no
         event  later  than  30  days   following  the  Audit  Release  Date,  a
         registration  statement on Form S-3 (together  with all  amendments and
         supplements   to   any   such   registration    statement,    including
         post-effective  amendments,  and all material incorporated by reference
         or  deemed  to  be  incorporated  by  reference  in  such  registration
         statement, the "S-3 Registration Statement"), or such other appropriate
         registration  statement  under the Securities Act of 1933, as described
         in greater  detail  below,  and the rules and  regulations  promulgated
         thereunder  (the "1933 Act" or the "Act"),  for the  registration  (the
         "Registration")  of the secondary offering of the SPSS Common Stock for
         the  account  of the  Shareholders.  SPSS  expects  to  have  published
         unaudited financial results,  covering at least thirty (30) days of the
         combined  operations of SPSS and In2itive  following the acquisition of
         In2itive by SPSS (the  "Acquisition"),  not later than March 31,  1998.
         SPSS shall use  reasonable  efforts to have the  Registration  declared
         effective  by  the  SEC  promptly  after  unaudited  financial  results
         covering at least

                                        4

<PAGE>



         thirty  (30)  days of the  combined  operations  of SPSS  and  In2itive
         following the  Acquisition  have been publicly  released by SPSS.  SPSS
         shall take such steps as are reasonably  required to register such SPSS
         Common Stock for sale on a delayed or  continuous  basis under Rule 415
         of the 1933 Act and,  provided that Form S-3 shall be available to SPSS
         for the Registration,  to keep such Registration Statement continuously
         effective for a period of twenty-four (24) months following the date of
         effectiveness,  or such shorter  period that will terminate when all of
         the shares of SPSS Common Stock have been sold by the Shareholders (the
         "Trading  Period").  In the event Form S-3 is not available to SPSS for
         the   Registration,   SPSS  shall,   at  the  written  request  of  the
         Shareholders  holding a majority of the SPSS Common Stock,  prepare one
         (1)  company  paid  (excluding  any  underwriting  fees and  discounts)
         registration  statement  on the  appropriate  form,  together  with all
         amendments  and  supplements  to  any  such   registration   statement,
         including post-effective  amendments,  and all material incorporated by
         reference   or  deemed  to  be   incorporated   by  reference  in  such
         registration  statement (a "Non-S-3 Registration  Statement",  with the
         S-3  Registration   Statement  and  a  Non-S-3  Registration  Statement
         referred to herein as the "Registration Statement"), and SPSS shall use
         all reasonable  efforts to maintain the  effectiveness  of such Non-S-3
         Registration  Statement  for a  period  of 90 days  after  the  date of
         initial  effectiveness.  While such  Registration  Statement remains in
         effect,  SPSS  may at any  time  deliver  to  any  Shareholders  in the
         employment of SPSS,  written notice to the effect that sales may not be
         effected  under  the  Registration  Statement  for a period of time the
         "Blackout  Period")  because of the  existence  of  material  facts not
         disclosed or incorporated by reference in such  Registration  Statement
         and in the then-current prospectus included therein or because SPSS has
         received an opinion of counsel  that such sales may violate  provisions
         of the United States  Securities Laws; upon receipt of any such notice,
         such Shareholders  shall refrain from selling any shares of SPSS Common
         Stock under such Registration Statement until they have received notice
         from SPSS to the  effect  that such sales may then be  effected.  In no
         event shall the Blackout  Period be greater than any similar  period of
         time during which SPSS  restricts any of its employees  from  effecting
         sales in SPSS Common Stock because of the  existence of material  facts
         not  disclosed or  incorporated  by  reference  in any then-  effective
         registration  statement  and in the  then-current  prospectus  included
         therein or otherwise not publicly disclosed. SPSS shall promptly update
         such  Registration  Statement and the  prospectus  included  therein in
         order to permit the  shares of SPSS  Common  Stock to be sold,  and the
         Trading Period shall  automatically be extended by the aggregate number
         of days during which the  Shareholders  were instructed to refrain from
         selling  shares of SPSS Common Stock during all Blackout  Periods.  The
         Blackout  Period,  as used  herein  shall  be  defined  as the  current
         Blackout Period policy currently in effect at SPSS.

                  (b) The  Shareholders  shall cooperate with SPSS in connection
         with the  Registration  and shall provide such  information and execute
         such documents as SPSS shall reasonably  request in connection with the
         Registration.


                                        5

<PAGE>



                  (c) SPSS  shall  not  grant to any  holder  of  shares of SPSS
         Common Stock  registration  rights which  interfere  with the rights of
         Shareholders  and the obligations of SPSS under this Article IV of this
         Agreement.

                  4.2 Sales of SPSS Common Stock by Shareholders. If at any time
any  Shareholder  elects to sell all or any of his shares of SPSS Common  Stock,
Shareholder shall conduct such sales only through registered  securities brokers
("Brokers").

                  4.3 Registration  Expenses.  SPSS shall be responsible for and
shall  pay  all  fees,  costs  and  expenses  incurred  by it  relating  to  the
Registration,  including without  limitation,  all SEC and securities  exchange,
NASDAQ  registration and filing fees, and all fees and expenses of compliance by
SPSS with the federal securities laws or any applicable state blue sky laws, but
not  including (i) any fees and expenses of  Shareholders'  counsel or otherwise
incurred by  Shareholders,  and (ii)  underwriters'  fees or expenses,  broker's
costs,  commissions and other similar disposition costs associated with the SPSS
Common Stock owned by any Shareholder.

                  4.4  Restricted Stock.  In2itive has advised the Shareholders,
and the Shareholders understand and agree, as follows:

                  (a) That the shares of SPSS Common Stock to be received by the
         Shareholders  pursuant to this Agreement are not currently subject to a
         registration  statement  under  the Act,  and are  issued  pursuant  to
         exemptions from  registration  under the Act which  exemptions  depend,
         among other things, on the bona fide nature of their investment intent.

                  (b) That they shall not  transfer  the SPSS Common Stock to be
         received  by the  Shareholders  pursuant  to this  Agreement  except in
         compliance  with the provisions of the Act. Any proposed  transferee of
         the  shares  of SPSS  Common  Stock  shall  agree to take and hold such
         securities upon the conditions set forth in 4.4(c) hereof.

                  (c) Until such time as the Shares being sold  hereunder to the
         Shareholders   may  be  sold  under  Rule  144(k),   each   certificate
         representing the shares of SPSS Common Stock issued to the Shareholders
         shall be stamped or otherwise  imprinted with a legend in substantially
         the following form (in addition to any legend required under applicable
         state securities laws):

                  THE SHARES  REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED
                  FOR  INVESTMENT  UNDER  AN  EXEMPTION  FROM  THE  REGISTRATION
                  REQUIREMENTS  OF THE SECURITIES  ACT OF 1933.  SUCH SHARES MAY
                  NOT BE  OFFERED,  SOLD OR  TRANSFERRED  IN THE  ABSENCE  OF AN
                  EFFECTIVE   REGISTRATION   STATEMENT  UNDER  SAID  ACT  OR  AN
                  EXEMPTION  THEREFROM  OR IN  CONTRAVENTION  OF  THE  AGREEMENT
                  COVERING THE

                                        6

<PAGE>



                  PURCHASE  OF THESE  SHARES  AND  RESTRICTING  THEIR  TRANSFER.
                  COPIES OF THE  AGREEMENT MAY BE OBTAINED AT NO COST BY WRITTEN
                  REQUEST  MADE BY THE HOLDER OF RECORD OF THIS  CERTIFICATE  TO
                  THE SECRETARY OF THE COMPANY AT ITS PRINCIPAL OFFICE.

When the shares being sold hereunder to the  Shareholders  may be sold under the
circumstances described in Rule 144(k) (or any successor rule or regulation) and
there exists no other restriction on the sale of stock imposed subsequent to the
date hereof, SPSS will, upon request of the Shareholders' Representative,  cause
SPSS'  transfer  agent to  exchange  the shares  legended as set forth above for
unlegended shares.

                  (d) Unless a  registration  statement  under the Act  covering
         transactions   in  the  SPSS  Common   Stock  to  be  received  by  the
         Shareholders  pursuant to this Agreement has been declared effective by
         the SEC and such  registration  statement remains effective at the time
         of transfer,  each holder of shares of SPSS Common Stock to be received
         by the  Shareholders  pursuant to this  Agreement  shall  comply in all
         respects with the provisions of this Section 4.4. Prior to any proposed
         transfer of any such securities,  the holder thereof shall give written
         notice to SPSS of such  holder's  intention to effect such transfer and
         shall  comply  with the  requirements  set forth in the balance of this
         section.  Each such notice shall describe the manner and  circumstances
         of the proposed transfer in reasonable detail, and shall be accompanied
         by (i) a written  opinion  of legal  counsel  who  shall be  reasonably
         satisfactory to SPSS, addressed to SPSS, and reasonably satisfactory in
         form and  substance to SPSS'  counsel,  to the effect that the proposed
         transfer of such securities may be effected without  registration under
         the 1933 Act, (ii) a "no action" letter from the SEC to the effect that
         the  distribution  of such  securities  without  registration  will not
         result in a recommendation by the staff of the SEC that action be taken
         with respect thereto, or (iii) such other showing  satisfactory to SPSS
         and its counsel that the proposed  transfer of such  securities  may be
         effected without  registration under the 1933 Act, whereupon the holder
         of such  securities  shall be entitled to transfer  such  securities in
         accordance  with the terms of the  notice  delivered  by the  holder to
         SPSS.

                  4.5 Indemnification.  In the event any SPSS Common Stock held 
by a Shareholder is included in a registration statement under this Article IV:

                  (a) SPSS will  indemnify and hold  harmless such  Shareholder,
any underwriter (as defined in the Act) for such Shareholder and each person, if
any, who controls such Shareholder or underwriter  within the meaning of the Act
or the 1934 Act,  against any losses,  claims,  damages,  liabilities  (joint or
several) or expenses to which they may become  subject  under the Act,  the 1934
Act or other  federal or state law,  insofar as such  losses,  claims,  damages,
liabilities  (or actions in respect  thereof)  or  expenses  arise out of or are
based  upon  any  of  the   following   statements,   omissions  or   violations
(collectively  a  "Violation"):  (i) any  untrue  statement  or  alleged  untrue
statement of a material fact contained in such registration statement,

                                        7

<PAGE>



including any preliminary  prospectus or final prospectus  contained  therein or
any amendments or supplements thereto,  (ii) the omission or alleged omission to
state  therein a material fact  required to be stated  therein,  or necessary to
make the statements  therein not  misleading,  or (iii) any violation or alleged
violation by SPSS of the Act, the 1934 Act, any state securities law or any rule
or regulation  promulgated  under the Act, the 1934 Act or any state  securities
law;  and SPSS will pay to each such  Shareholder,  underwriter  or  controlling
person,  any and all  legal or other  expenses  reasonably  incurred  by them in
connection  with  investigating  or  defending  any such  loss,  claim,  damage,
liability,  or  action;  and SPSS  will  pay,  as  incurred,  any legal or other
expenses reasonably  incurred by any person intended to be indemnified  pursuant
to this subsection  4.5(a),  in connection with  investigating  or defending any
such loss, claim, damage, liability,  action or expense provided,  however, that
the indemnity  agreement  contained in this subsection 4.5(a) shall not apply to
amounts paid in settlement of any such loss, claim, damage, liability, action or
expense if such  settlement  is  effected  without  the  consent of SPSS,  which
consent shall not be unreasonably withheld, nor shall SPSS be liable in any such
case for any such  loss,  claim,  damage,  liability,  action or  expense to the
extent  that it  arises  out of or is based  upon a  Violation  which  occurs in
reliance  upon and in  conformity  with  written  information  furnished by such
Shareholder or any controlling  person of such Shareholder  expressly for use in
connection with such registration.

                  (b) Such  Shareholder  will  indemnify and hold harmless SPSS,
each of its  directors,  each of its  officers  who has signed the  registration
statement, each person, if any, who controls SPSS within the meaning of the Act,
any underwriter, and any controlling person of any such underwriter, against any
losses, claims, damages, liabilities (joint or several) or expenses to which any
of the  foregoing  persons may become  subject,  under the Act,  the 1934 Act or
other federal or state law, insofar as such losses, claims, damages, liabilities
(or actions in respect  thereto) or expenses  arise out of or are based upon any
Violation,  in each  case to the  extent  (and  only to the  extent)  that  such
Violation  occurs in reliance  upon and in conformity  with written  information
furnished  by  such  Shareholder  expressly  for  use in  connection  with  such
registration;  and such  Shareholder  will pay, as incurred,  any legal or other
expenses reasonably  incurred by any person intended to be indemnified  pursuant
to this subsection  4.5(b),  in connection with  investigating  or defending any
such loss, claim, damage, liability,  action or expense; provided, however, that
the indemnity  agreement  contained in this subsection 4.5(b) shall not apply to
amounts paid in settlement of any such loss, claim, damage, liability, action or
expense if such settlement is effected without the consent of such  Shareholder,
which consent shall not be unreasonably withheld or delayed;  provided, that, in
no event  shall any  indemnity  under this  subsection  4.5(b)  exceed the gross
proceeds  from the offering of the shares of SPSS Common Stock  received by such
Shareholder.  SPSS  shall  make  the  Registration  Statement  available  to the
Shareholders prior to the filing thereof.

                  (c) Promptly after receipt by an indemnified  party under this
Section  4.5  of  notice  of  the  commencement  of any  action  (including  any
governmental action), such indemnified party will, if a claim in respect thereof
is to be made against any indemnifying  party under this Section 4.5, deliver to
the  indemnifying  party a written  notice of the  commencement  thereof and the
indemnifying  party shall have the right to  participate  in, and, to the extent
the

                                        8

<PAGE>



indemnifying  party so  desires,  jointly  with  any  other  indemnifying  party
similarly  noticed,   to  assume  the  defense  thereof  with  counsel  mutually
satisfactory  to the  parties;  provided,  however,  that an  indemnified  party
(together with all other  indemnified  parties which may be represented  without
conflict by one counsel)  shall have the right to retain one  separate  counsel,
with  the  fees  and  expenses  to  be  paid  by  the  indemnifying   party,  if
representation  of  such  indemnified  party  by  the  counsel  retained  by the
indemnifying party would be inappropriate due to a conflict of interests between
such indemnified  party and any other party  represented by such counsel in such
proceeding.  The failure to deliver  written  notice to the  indemnifying  party
within a reasonable time of the commencement of any such action,  if prejudicial
to its ability to defend such action,  shall relieve such indemnifying  party of
any liability to the indemnified party under this Section 4.5.

                  4.6         Additional Obligations of SPSS.   With respect  to
any registration hereunder, SPSS shall:

                  (a) furnish to the  Shareholders  such  numbers of copies of a
         prospectus,  including a preliminary prospectus, in conformity with the
         requirements  of  the  Act,  and  such  other  documents  as  they  may
         reasonably  request in order to facilitate the disposition of shares of
         SPSS Common Stock owned by them;

                  (b) use reasonable  efforts to qualify the securities  covered
         by such registration  statement under such other securities or Blue Sky
         laws of such  jurisdictions as shall be reasonably  appropriate for the
         distribution of the securities covered by the registration statement;

                  (c)         notify NASDAQ  of  the  issuance  of the shares of
         SPSS Common Stock covered by such registration statement; and

                  (d) notify each  Shareholder  of shares of SPSS  Common  Stock
         under such registration  statement as promptly as possible, at any time
         when a prospectus  relating  thereto is required to be delivered  under
         the Act, of the happening of any event of which SPSS has knowledge as a
         result  of  which  the  prospectus   contained  in  such   registration
         statement,  as  then in  effect,  includes  an  untrue  statement  of a
         material  fact or omits to state a material  fact required to be stated
         therein or necessary to make the  statements  therein not misleading in
         light of the circumstances then existing.

                  4.7  Reports  Under the  Exchange  Act.  With a view to making
available to the Shareholders the benefits of Rule 144 promulgated under the Act
and any  other  rule or  regulation  of the SEC that  may at any  time  permit a
Shareholder to sell securities of SPSS to the public without registration,  SPSS
agrees to use its reasonable efforts to:

                  (a) make and keep public information available, as those terms
         are understood and defined in Rule 144, at all times;


                                        9

<PAGE>



                  (b) file with the SEC in a timely manner all reports and other
         documents required of SPSS under the Act and the Exchange Act; and

                  (c)  furnish  to any  Shareholder  forthwith  upon  request  a
         written  statement  by SPSS  that it has  complied  with the  reporting
         requirements of Rule 144 and of the Act and the Exchange Act, a copy of
         the most  recent  annual or  quarterly  report of SPSS,  and such other
         reports and documents so filed by SPSS as may be  reasonably  requested
         in  availing  any  Shareholder  of any  rule or  regulation  of the SEC
         permitting  the  selling of any  securities  of SPSS held by it without
         registration.


                                    ARTICLE V

               REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDERS

         The Shareholders represent and warrant to SPSS that:

                  5.1  Organization  and   Qualification.   

                  (a)  In2itive  is  a  corporation   duly  organized,   validly
         existing under the  laws of the Danish  Corporation Act ("DCA") and has
         the  corporate   power  and  corporate  authority  to enter  into  this
         Agreement, to  consummate the transactions  contemplated hereby, to own
         or lease  the  properties  and other assets which it presently  owns or
         leases and  to carry on its business as presently conducted.

                  (b)  The  copy  of the  Articles  of  Incorporation,  and  all
         amendments  thereto,  of  In2itive,  as  certified  by the Commerce and
         Companies Registry and of the By-laws, as amended to date, of In2itive,
         as certified by its Chairman of the Board,  being delivered herewith to
         SPSS, are true, complete and correct copies as amended and presently in
         effect.  All minutes and consents of the  shareholders and directors of
         In2itive are  contained in the minute books of In2itive and said minute
         books have been furnished to SPSS for  examination at a reasonable time
         prior to the Closing. No minutes or consents have been included in such
         minute books since such  examination  by SPSS which have not heretofore
         been  furnished to SPSS and no corporate  action not  reflected in said
         minute books has been taken.

                  (c)  In2itive is licensed or qualified to do business in every
         domestic and foreign  jurisdiction  where the failure to be licensed or
         qualified  would  have a material  adverse  effect on the  business  of
         In2itive (a "Material Adverse Effect").

                  (d)         In2itive has no subsidiaries.

                  5.2 Authority.  The  Shareholders,  as appropriate,  have full
power,  capacity and  authority  (corporate or otherwise) to execute and deliver
this  Agreement and to consummate  the  transactions  contemplated  hereby.  The
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions contemplated hereby have been duly and validly authorized and

                                       10

<PAGE>



approved by each of the  Shareholders and the Board of Directors of In2itive and
no  other  proceedings  (corporate  or  otherwise)  on  the  part  of any of the
Shareholders  or In2itive  are  necessary  to  authorize  this  Agreement  or to
consummate the transactions  contemplated  hereby.  This Agreement and the other
agreements  contemplated  by this Agreement have been duly and validly  executed
and  delivered  by each of the  Shareholders  and  constitute  legal,  valid and
binding agreements of the Shareholders enforceable in accordance with its terms,
except  that (i) such  enforcement  may be  subject to  bankruptcy,  insolvency,
reorganization,  moratorium  or other  similar  laws now or  hereafter in effect
relating to creditors' rights,  and (ii) the remedy of specific  performance and
injunctive  and other  forms of  equitable  relief may be  subject to  equitable
defenses  and to the  discretion  of  the  court  before  which  any  proceeding
therefore may be brought.

                  5.3  Capitalization.  The entire  authorized  capital stock of
In2itive  consists  solely of Shares in the nominal amount of DKK [3,261,750] of
which DKK  [2,866,750]  are A- Shares and DKK [395,000] are B-Shares which as of
the date of this  Agreement  are the only  issued and  outstanding  Shares  (the
"Outstanding Shares").  There are no other authorized shares of capital stock of
In2itive.  The Shares represent the only equity interests of the Shareholders or
any other person or entity in In2itive. All of the issued and outstanding Shares
are owned of record  and  beneficially  by the  Shareholders  in the  respective
amounts set forth in Schedule 5.3. The Shares are subject to no  restrictions on
transferability, other than the requirement to consent by the board of directors
of In2itive to a transfer of Shares as set forth in Section 4 of the Articles of
Association of In2itive.  All of the outstanding  Shares are duly authorized and
validly  issued and  outstanding,  fully paid and  non-assessable,  and were not
issued in violation of any preemptive  rights.  There are no Shares in treasury,
and there are no Shares  reserved for issuance.  Except as set forth in Schedule
5.3, there are no outstanding options,  warrants,  conversion or other rights to
acquire from any of the  Shareholders  or In2itive,  or any plans,  contracts or
commitments  providing for the issuance of, or the granting of, rights by any of
the  Shareholders  or  In2itive to  acquire:  (i) any capital  stock of In2itive
(whether  issued  or  unissued)  or  (ii)  any  securities  convertible  into or
exchangeable  for any capital stock of In2itive.  Other than those  disclosed on
Schedule  5.3,  there are no agreements  or  understandings  with respect to the
voting,  holding or selling of any Shares of capital  stock of In2itive,  or any
contractual  obligations of In2itive or any of the Shareholders  with respect to
In2itive's  capital  stock.  There are no voting trusts or proxies  currently in
effect with respect to the Shares.

                  The Key  Shareholders  agree that  In2itive  will use its best
efforts to obtain the exercise or  termination  of all  outstanding  options for
In2itive shares,  if any, on or prior to the Closing Date. SPSS will not assume,
substitute  for, or continue any options for In2itive  stock  outstanding on the
closing date (hereinafter the "Remaining Options").

                  5.4 Title to Shares.  The  Shareholders  own and have good and
marketable  title to the  Shares,  free and  clear of any lien,  pledge,  claim,
encumbrance, restriction or right of any third party of any kind. On the Closing
Date, SPSS will acquire good and marketable title to the Shares,  free and clear
as aforesaid, including without limitation any of the foregoing set forth in the
Bylaws of  In2itive.  The  Shares  represent  the only  equity  interest  of the
Shareholders in In2itive.

                                       11

<PAGE>




                  5.5 Consents and Approvals. Except the consent by the Board of
Directors  of In2itive to the  transfer  of the Shares,  which  consent has been
obtained and is in full force and effect,  and as listed on Schedule 5.5,  there
is no authorization, consent, order or approval of, or notice to or filing with,
any  individual  or entity  required  to be obtained or given by In2itive or the
Shareholders  in order  for the  Shareholders  to  consummate  the  transactions
contemplated hereby and fully perform their obligations hereunder.

                  5.6 Absence of  Conflicts.  Other than listed on Schedules 5.8
and  5.16,  the  execution,   delivery  and  performance  by  In2itive  and  the
Shareholders of this Agreement and the  consummation by the  Shareholders of the
transactions  contemplated hereby will not, with or without the giving of notice
or lapse of time or both,  (i)  conflict  with or result in a breach or  default
under any term or  condition  of the  Articles  of  Incorporation  or By-laws of
In2itive,  (ii) violate any  provision of law,  statute,  rule or  regulation to
which In2itive or the  Shareholders is or was subject,  (iii) violate any order,
judgment or decree which is or was  applicable to In2itive or the  Shareholders;
(iv)  conflict with or result in a breach or default under any term or condition
of any agreement or other  instrument to which In2itive or the Shareholders is a
party or by which  either of them is bound,  or (v)  cause,  or give any  person
grounds to cause, the maturity of any debt,  liability or obligation of In2itive
to be accelerated or increase any such liability or obligation.

                  5.7  Financial  Statements;   Accounts  Receivable.   The  Key
Shareholders have caused In2itive to previously  deliver to SPSS for inspection,
within a reasonable  time prior to the Closing Date,  true and correct copies of
the audited  balance sheets of In2itive as of December 31, 1995 and December 31,
1996 and the  related  audited  statements  of income,  statements  of  retained
earnings and statements of changes in financial  position for the periods ending
on  such  dates  (collectively,   the  "Financial  Statements").  The  Financial
Statements (i) have been prepared in accordance  with Danish Annual Accounts Act
and the  supplementing  guidelines of the Danish  Institute of State  Authorized
Public Accountants, (ii) are correct and complete and are in accordance with the
books and records of In2itive, in all material respects and (iii) present fairly
in all material  respects the  financial  position and condition of In2itive and
the related results of operations as at the dates and for the periods then ended
(subject to customary year-end  adjustments,  which adjustments are not material
in kind or amount,  it being  understood that neither (ii) nor (iii) above shall
imply that the Financial  Statements are intended to present financial  position
and results of operations  in  conformity  with  generally  accepted  accounting
principles of the United States.

                  Subject to a reserve for bad debts shown on In2itive's  latest
balance  sheets  included  in the  Financial  Reports,  all  accounts  and notes
receivable  reflected  on the balance  sheets are,  and all  accounts  and notes
receivable subsequently accruing to the Closing Date will be, (a) valid, genuine
and subsisting, (b) subject to no known defenses,  set-offs or counterclaims and
(c) current and collectible.

                  5.8         Absence of Undisclosed Liabilities; Warranties in 
Connection  with  Software  Products.  To  the  best  of the  Key  Shareholders'
knowledge, after due inquiry of

                                       12

<PAGE>



In2itive,  and  except  as and  to  the  extent  reserved  for in the  Financial
Statements, the Financial Statements of In2itive reflect all material claims and
liabilities which should be or are required to be disclosed under the guidelines
of the Danish  Institute of State Authorized  Public  Accountants and the Danish
Annual  Accounts Acts other than those in the ordinary  course of business since
December  31,  1996,  which  have  not  yet  been  accrued  or  booked.  The Key
Shareholders  have made due inquiry with the  management  of In2itive and do not
know of any basis for the  assertion of any claim or  liability  relating to the
businesses of In2itive, nor are they aware of any occurrence or fact that has or
might have an adverse effect on the businesses of In2itive.  Except as listed on
Schedule  5.8,  as of the  date  of this  Agreement,  In2itive  has no  material
outstanding  debt  to any  bank  or  other  lender.  For  the  purposes  of this
paragraph, materiality shall mean any liability or debt in excess of $5,000.

                  5.9 Absence of Certain  Changes or Events.  To the best of the
Key Shareholders' knowledge,  after due inquiry of In2itive, since September 30,
1997 and other than listed on Schedule  5.9,  there has not been (a) any damage,
destruction  or casualty loss to the  properties or assets of In2itive  (whether
covered by insurance or not)  outside the ordinary  course of business;  (b) any
material  adverse  change  in  the  business,  assets,  properties,  operations,
prospects or financial  condition  of In2itive,  or any fact or condition  which
could cause such a change,  other than any  change,  fact or  condition  related
solely  to  the  transactions  contemplated  hereby;  (c)  any  entry  into  any
transaction,   commitment  or  agreement  (including,  without  limitation,  any
borrowing)  in excess of $5,000 or outside  the  ordinary  course of business of
In2itive; (d) any direct or indirect redemption, repurchase or other acquisition
for value by In2itive of its capital stock or any agreement to take such action,
or  any  declaration,  setting  aside  or  payment  of  any  dividend  or  other
distribution  in cash,  stock or property  with  respect to  In2itive's  capital
stock; (e) other than increases in base compensation and bonuses in the ordinary
course of business (not exceeding 10% per annum of the aggregate  payroll),  any
increase in the rate or terms of  compensation  payable or to become  payable by
In2itive to its respective directors, managers, employees, agents or independent
contractors or any increase in the rate or change in the terms of any employment
agreement or compensatory  arrangement,  or any changes in any bonus, severance,
pension,  insurance or other  employee  benefit  plan,  or any other  payment or
benefit  made  to  or  for  any  such  director,  manager,  employee,  agent  or
independent contractor; (f) any sale, transfer or other disposition of any asset
of In2itive  to any party,  including,  without  limitation,  the  Shareholders,
except  for  payment  of  obligations  incurred,  and sale of  products,  in the
ordinary course of business consistent with past practices; (g) any amendment or
termination  of any material  contract or agreement to which In2itive is a party
or any  termination  or waiver of any other rights of value to the businesses of
In2itive, except in the ordinary course of business; (h) any capital expenditure
for additions to property or equipment by In2itive in excess of $5,000;  (i) any
split,  combination,  exchange or reclassification of shares of capital stock of
In2itive;  (j) any  issuance  of  capital  stock of  In2itive  or of  securities
convertible into or rights to acquire any such capital stock; (k) any failure by
In2itive to pay accounts payable or other  obligations in the ordinary course of
business;  (l) the  incurrence  of any  obligations  or  liability  (absolute or
contingent) or the making of any capital  expenditure not in the ordinary course
of  business  or in excess of  $5,000;  (m) any  pledge of any of the  assets or
properties  of In2itive or any action or inaction  which would  subject any such
assets or properties to any lien, security interest,

                                       13

<PAGE>



mortgage,  pledge,  claim,  charge or other  encumbrance  of any  kind;  (n) the
incurrence of any liability or  obligation by In2itive,  except for  liabilities
incurred  in the  ordinary  course of  business;  (o) any  actual or  threatened
termination  or  cancellation  of, or  modification  or change in, any  business
relationship  with any customer or  customers of In2itive or other  agreement or
arrangement  involving or related to the assets or properties of the  businesses
of  In2itive  ; (p) any  cancellation  of a debt due to or a claim of  In2itive,
other than by payment or other  satisfaction;  (q) any  failure of  In2itive  to
perform under,  or any default by In2itive under,  any agreement,  obligation or
covenant to which it is or was bound; (r) any change in any method of accounting
or accounting practice, principle or procedure; (s) any action or inaction which
might cause  In2itive to incur any tax liability  out of the ordinary  course of
business; (t) any other event or condition of any character which materially and
adversely affects the businesses of In2itive;  or (u) any agreement,  whether in
writing or otherwise, to take any action described in this Section 5.9.

                  5.10        Investment in the SPSS Common Stock.

                  (a) SPSS has  provided to each of the  Shareholders  listed on
Exhibit  B  (the  "Non-English   Shareholders")  and  each  of  the  Non-English
Shareholders  acknowledge  receipt  of  a  copy  of,  the  Confidential  Private
Placement  Memorandum,  dated  October 23,  1997,  together  with the  materials
provided  therewith,  and each of the Shareholders  further acknowledge that (i)
each has been afforded such other  information  as each has deemed  necessary to
make an informed decision to acquire the SPSS Common Stock to be received by the
Shareholders  pursuant to this Agreement and have had sufficient  opportunity to
ask  questions  and  receive  answers  of  In2itive  and SPSS,  as  appropriate,
concerning  the  operations,  business  and  financial  condition  of  SPSS  and
regarding the  Acquisition  and the business of SPSS and In2itive,  and all such
questions have been  answered,  (ii) each has been informed of the provisions of
Article IV of this  Agreement,  (iii) each has been  informed that the shares of
SPSS  Common  Stock  each  is  acquiring  must  be  held  by  such   Shareholder
indefinitely,  unless an effective 1933 Act registration  statement or exemption
from registration is available; (iv) each has been informed of the provisions of
Rule 144 and Rule  144A  promulgated  under  the 1933 Act,  which  rules  permit
limited resale of restricted  securities  subject to the satisfaction of certain
conditions;  (v) each has been informed that  restrictions upon the sale of SPSS
Common Stock imposed by Federal and State securities, blue sky and other similar
laws may markedly  affect the ability of the  Shareholders  to  liquidate  their
investment in the SPSS Common Stock to be received by the Shareholders  pursuant
to this  Agreement;  (vi) each has been informed that the  Shareholders  have no
recourse  against SPSS for declines in the value of their investment in the SPSS
Common  Stock to be received  by the  Shareholders  pursuant  to this  Agreement
absent fraud or  violations  of the Federal and State  securities,  blue sky and
other  similar laws on the part of SPSS;  and (vii) each has been  informed that
the SPSS  Common  Stock to be  received  by the  Shareholders  pursuant  to this
Agreement  represents an  investment in the business of SPSS,  and that SPSS has
made no  representations  or  warranties  with  respect to the  future  business
performance of SPSS or the price of the SPSS Common Stock.


                                       14

<PAGE>



                  5.11 Real and Personal Property; Inventories. Schedule 5.11(a)
correctly  identifies  all  real  property  owned or used by  In2itive  and each
material lease of real property held by In2itive.  No claims,  charges or notice
of violations have been filed, served, made or threatened, orally or in writing,
against or relating to any such property or any of the  operations  conducted at
any  property  leased by  In2itive.  In2itive  owns no real  property.  Schedule
5.11(b)  describes  all material  tangible or intangible  personal  property and
assets of In2itive  with an estimated  value  greater than $5,000.  The tangible
personal  property and assets are  generally in good working order or condition,
reasonable  wear and tear excepted.  In2itive has good and marketable  title to,
and is in possession of or has control over, all of its personal property,  none
of  which  is held  under or  subject  to any  mortgage,  pledge,  lien,  lease,
encumbrance,  conditional sales contract or other security arrangement ("Liens")
except for Taxes (as  defined  below) not yet due (such  Liens for Taxes and the
amounts,  if known,  listed on Schedule  5.11(b)) and such other  matters as are
reflected on Schedule 5.11(b).


                  5.12        Patents, Trademarks, Etc.

                  Schedule 5.12(a) contains an accurate and complete description
of  all  domestic  and  foreign  patents,  trademarks,  current  service  marks,
trademark  registrations,  logos,  trade names,  assumed  names,  copyrights and
copyright  registrations and all pending applications  therefor other than those
assets   relating  to  readily   available   commercial   products  or  software
(collectively,  the "Intellectual Assets"),  presently owned or held by In2itive
or under which In2itive owns or holds any license,  or in which In2itive owns or
holds any direct or indirect interest;  and to the Key Shareholders'  knowledge,
no others are necessary  for the conduct of the present  businesses of In2itive.
To the best of the Key Shareholders' knowledge, and other than readily available
commercial  products or software,  or as described on Schedule 5.12(b),  none of
the  products  manufactured,  distributed  or sold by  In2itive,  nor any of the
Intellectual  Assets, or intellectual  property,  including without  limitation,
technology,  inventions,  processes, designs, formulae, know-how, trade secrets,
(collectively,  with the Intellectual Assets, the "Intellectual  Property"),  or
any of In2itive's  activities,  conflict with, infringe or otherwise violate any
patents,  trademarks or  copyrights,  or any other rights,  of any individual or
entity,  nor require  payments to be made to any person.  To the best of the Key
Shareholder's  knowledge,  information  and  belief,  In2itive  has the sole and
exclusive  rights to the  Intellectual  Property  and has the right and power to
use,  lease  and  sell  the  Intellectual  Property.  To the  best  of  the  Key
Shareholder's knowledge, information and belief, no claim or potential claim has
been asserted by any other party to the Intellectual  assets and there exists no
basis for such a claim or potential claim. To the best of the Key  Shareholders'
and  In2itive's  knowledge,  In2itive is not using  confidential  information or
trade secrets of any former employer of any past or present employees engaged in
businesses  of  In2itive.  To the  best  of  the  Key  Shareholder's  knowledge,
information and belief, the items described in the schedules attached hereto and
the  other  Intellectual   Property  are  reasonably  adequate  to  conduct  the
businesses  of  In2itive  as  presently  conducted.  Upon  consummation  of  the
transactions contemplated hereby, SPSS will acquire good and marketable title to
all of the Intellectual Property and the goodwill associated therewith.


                                       15

<PAGE>



         Solely for purposes of this Section 5.12, "knowledge" shall mean actual
knowledge  and  that  information  resulting  from  a due  inquiry  by  the  Key
Shareholders of all present  employees and  independent  contractors of In2itive
and such past  employees  and  independent  contractors  of  In2itive  as deemed
appropriate and as reflected in the letters from such persons attached hereto.

                  5.13 Employees.  All personnel,  including employees,  agents,
consultants and  contractors,  who have  contributed to or participated in, in a
material way, the  conception  and  development  of the  Intellectual  Assets on
behalf of  In2itive  either  (a) were at such time  parties  to  "work-for-hire"
arrangements  or similar  agreements with In2itive,  that has accorded  In2itive
full,  effective,  exclusive and original ownership of all intellectual property
thereby arising,  or (b) except as disclosed on Schedule 5.13(b),  have executed
appropriate instruments of assignment, which are still in full force and effect,
in favor of  In2itive,  as  assignee,  that  have  conveyed  to  In2itive  full,
effective and exclusive ownership of all intellectual  property thereby arising.
To the best of the Key  Shareholders'  knowledge,  no employee of In2itive is in
violation  of (i) any term of any  employment  contract,  any  "work  for  hire"
arrangement or similar agreement, or any patent disclosure agreement or (ii) any
other contract or agreement,  or any restrictive covenant relating to the rights
of any such  employee to be  employed  by  In2itive  or to use trade  secrets or
proprietary information of others.

                  5.14        Contracts and Commitments.

                  (a)  Schedule  5.14   contains  a  list  of  all   enforceable
         agreements,   contracts,  guarantees,   commitments,   restrictions  or
         instruments of any kind of In2itive,  including without  limitation (i)
         powers of attorney (whether revocable or irrevocable) to any individual
         or entity,  (ii) Intellectual  Property  licenses,  including,  without
         limitation, licenses with respect to source codes used or to be used in
         either the Software Products,  and any agreements by which In2itive has
         an  obligation  to pay  royalties  to any  third  party  in  connection
         therewith, (iii) contracts,  agreements,  licenses or other commitments
         or arrangements in effect with respect to the  development,  marketing,
         distribution,  licensing,  or promotion of the Software Products or any
         other   inventory,   the   Technical   Documentation,   or   In2itive's
         Intellectual  Assets  with any  independent  salesperson,  distributor,
         sublicensor, or other remarketer or sales organization,  (iv) grants to
         any  individual  or entity of any  rights or  security  interests  with
         respect  to the  source  codes  for  the  Software  Products,  and  (v)
         insurance   policies  held  by  In2itive   concerning  its  businesses,
         operations and properties ("Contracts"). True and correct copies of all
         Contracts have been made  available to SPSS at a reasonable  time prior
         to Closing. To the best of the Key Shareholders'  knowledge,  after due
         inquiry  of  In2itive,  all of the  Contracts  are  valid  and  binding
         obligations of In2itive enforceable in accordance with their respective
         terms to the extent  permitted by applicable law, and are in full force
         and  effect and  complied  with.  To the best of the Key  Shareholders'
         knowledge,  all of the Contracts are legal and binding  obligations  of
         the other party,  enforceable in accordance with their respective terms
         to the extent  permitted by applicable law. All of the Contracts are in
         full force and effect and complied  with, and to the best of In2itive's
         knowledge,  none of the  Contracts  have a Material  Adverse  Effect on
         In2itive. All of In2itive's

                                       16

<PAGE>



         standard form customer contracts  constitute only end-user  agreements,
         each of which grants the end-user  thereunder  solely the non-exclusive
         right and license to use an identified Software Product of In2itive and
         related  user  documentation,  for  internal  purposes  only.  True and
         correct copies of each standard form customer and distributor contracts
         currently  in use by  In2itive  in the  conduct of its  businesses  are
         attached to Schedule 5.14. In2itive has not agreed with any customer or
         distributor to make any variation in any such contract which could have
         a Material Adverse Effect on In2itive.

                  (b) To the best of the Key Shareholders'  knowledge and except
         as disclosed on Schedule 5.14(b), In2itive is not in default, and there
         is no basis for any valid claim of default, in any respect under any of
         the Contracts. To the best of the Key Shareholders' knowledge, no other
         party to any of the Contracts is in default or breach thereof.

                  5.15 Source Code. Except as listed on Schedule 5.15,  In2itive
owns all rights,  title and  interest in and to the source  codes for all of its
software products and has not distributed any copies of such source codes to any
third  parties,  and In2itive has not agreed to pay to any  individual or entity
any  royalty,  commission  or other  amount on account of sales of its  software
products.

                  5.16  Government  Contracts.  Except as  described on Schedule
5.16,  the Key  Shareholders  do not have  knowledge  of any acts,  omissions or
noncompliance  with  regard  to  any  applicable  public  contracting   statute,
regulation  or  contract   requirement   (whether  express  or  incorporated  by
reference) to any contracts  relating to In2itive,  its businesses or any of its
assets with any Government Contract Party (as defined below) in either case that
have  led to or  could  lead to (a) any  claim,  refusal  or  dispute  involving
In2itive, its businesses, or any of its assets and any Government Contract Party
or (b) any suspension,  debarment or contract termination, or proceeding related
thereto. In2itive does not have any contracts with any Government Contract Party
(as defined below) other than standard  end-user license  agreements  containing
appropriate  reservations of rights. All of In2itive's  development of technical
data and Software  Products were developed  exclusively at private expense.  For
purposes  of this  Section  the  term  "Government  Contract  Party"  means  any
independent or executive agency, division, subdivision, audit group or procuring
office of any government,  including any prime  contractor of any government and
any higher level  subcontractor  of a prime  contractor of any  government,  and
including any employees or agents thereof, in each case acting in such capacity.

                  5.17  Insurance.  Schedule 5.17 hereto is a description of all
insurance policies held by In2itive. Each of In2itive's insurance policies is in
full force and effect,  and the  premiums  with  respect  thereto are fully paid
through the dates indicated thereon.  No insurer has denied coverage or reserved
rights for any claim made by In2itive,  or any other  individual or entity under
any insurance policies.

                  5.18     Litigation and Administrative Proceedings.  Except as
described   in   detail  on  Schedule  5.18,  there is  no  claim, action, suit,
proceeding or investigation in any court or

                                       17

<PAGE>



before any governmental or regulatory  authority pending,  or to the best of the
Key Shareholders' knowledge otherwise threatened, against or adversely affecting
In2itive  or  which  seeks  to  enjoin  or  obtain  damages  in  respect  of the
transactions  contemplated hereby. The Key Shareholders do not know nor have any
reason to know of any basis for any such  claim,  action,  suit,  proceeding  or
investigation.

                  5.19        Tax Matters.  For purposes of this Agreement:

                    (i)  The term  "Taxes"  means  all  state  and  local  taxes
                         imposed  by any Danish or  foreign  law,  and other net
                         income,  gross income,  gross receipts,  sales, use, ad
                         valorem, transfer,  franchise, profits, license, lease,
                         service, service use, withholding, payroll, employment,
                         excise,   severance,   stamp,   occupation,    premium,
                         property,  windfall profits,  customs,  duties or other
                         taxes,  fees,  assessments,  or  charges  of  any  kind
                         whatever including stamp duty and VAT together with any
                         interest  and  any  penalties,  additions  to  tax,  or
                         additional  amounts with respect thereto,  and the term
                         "Tax" means any one of the foregoing Taxes;

                    (ii) The term  "Returns"  means all  returns,  declarations,
                         reports, statements, and other documents required to be
                         filed in respect of Taxes,  and the term "Return" means
                         any one of the foregoing Returns;

                              5.19.1            All Returns Filed.  All Returns 
required to be filed by or on behalf of In2itive on or before the Effective Date
has been  filed and such  Returns  are  complete  and  accurate  and to the best
knowledge of the Key Shareholders,  after due inquiry of In2itive,  disclose all
Taxes (and other charges)  required to be paid for the periods covered  thereby.
No  extension  of time in which to file any such  Returns is currently in effect
and there are not  outstanding  agreements  or waivers  extending  the statutory
period of limitation applicable to such Returns.

                              5.19.2            All Taxes Paid.  All Taxes (and 
other charges)  shown on such Returns or otherwise  required to be paid, and any
deficiency  assessments,  penalties,  interest  and other  charges  with respect
thereto,  have been paid,  and there is otherwise no current  liability  for any
unpaid  taxes  (or  other  charges)  due in  connection  with  such  Returns  or
otherwise.  There are no tax liens  (other than for taxes not yet due) on any of
the assets or properties of In2itive and, no basis exists for the  imposition of
any such liens.

                              5.19.3            Examinations, Etc.  To  the best
knowledge  of the Key  Shareholders,  after due inquiry of  In2itive,  no state,
local, foreign or other Returns of In2itive for tax years that remain open under
any applicable  statute of limitations have been examined by the tax authorities
and no  deficiencies  have  been  asserted  or  assessments  made as a result of
examinations  (including all penalties and interest). No issues have been raised
by (or are

                                       18

<PAGE>



currently  pending  before) any taxing  authority in connection  with any of the
Returns which could  reasonably be expected to have a Material Adverse Effect on
In2itive, if decided adversely to In2itive,  nor are there any such issues which
have not been so raised but, if so raised by any taxing  authority in connection
with any of the Returns could, in the aggregate,  reasonably be expected to have
a Material Adverse Effect on In2itive.

                              5.19.4         Withholding.  In2itive has withheld
from its employees  and others (and timely  remitted to the  appropriate  taxing
authorities)  proper and accurate amounts for all periods in compliance with all
tax withholding  provisions of applicable state,  foreign,  local and other laws
(including, without limitation, income, withholding, social security, employment
and other payroll taxes).

                              5.19.5        Prior Consolidated Groups.  In2itive
is not, and has never been, subject to joint taxation with any other company.

                              5.19.6          Unpaid Tax.  To the best knowledge
of the Key Shareholders,  after due inquiry of In2itive, In2itive's unpaid taxes
do not exceed the reserve for tax liability  (excluding any reserve for deferred
taxes established to reflect timing differences between book and tax income) set
forth or included in the most recent  balance  sheet  included in the  Financial
Statements,  as adjusted for the passage of time through the Effective  Date, in
accordance with its past custom and practice.

                  5.20  Compliance  with Laws. To the best  knowledge of the Key
Shareholders,  after due inquiry to In2itive,  In2itive has not in the past been
nor is presently in any material  violation of, in respect of  operations,  real
property,  machinery,  equipment,  all other  property,  practices and all other
aspects of its businesses,  any applicable law (whether statutory or otherwise),
rule,  regulation,  order,  ordinance,  judgment  or decree of any  governmental
authority (federal, state, local, foreign or otherwise) (collectively,  "Laws").
In2itive  has not received  any written  notice of any asserted  present or past
failure of  In2itive  to comply  with any of such  Laws.  For  purposes  of this
paragraph,  materiality  shall mean any violation which could result in expenses
or fines to In2itive greater than $5,000.

                  5.21  Environmental and Safety Matters.  To the best knowledge
of the Key Shareholders, after due inquiry of In2itive, In2itive has complied in
all material  respects  with all state,  local or foreign Laws,  regulations  or
ordinances relating to environmental matters  ("Environmental  Laws") including,
but not limited to: air pollution;  water pollution;  noise control;  on-site or
off-site solid or hazardous  waste storage,  treatment,  discharge,  disposal or
recovery;  toxic and  hazardous  chemical  reporting;  or  employee  safety  and
hazardous  material use,  generation,  reliance,  transportation,  and reporting
provisions.  No written notice of violation of or potential  liability resulting
from any such  Environmental  Laws,  or orders with  respect  thereto,  has been
received,  nor is any  such  notice  pending  or to the  best  of its  knowledge
threatened.  For purpose of this paragraph  materiality shall mean any violation
which could result in a liability or penalty of greater than $5,000.


                                       19

<PAGE>



                  5.22        Employee Benefits.

                              5.22.1            Schedule 5.22 contains a written

          list of all employee benefit plans relating to employee  benefits with
          respect  to which  In2itive  has  incurred  or may incur any future or
          contingent  obligations,  including,  without  limitation,  all plans,
          agreements  or   arrangements   relating  to  deferred   compensation,
          pensions,  profit sharing,  retirement income or other benefits, stock
          purchase,  stock ownership and stock option plans,  stock appreciation
          rights, bonuses, severance arrangements,  health and welfare benefits,
          insurance  benefits and all other employee benefits or fringe benefits
          (collectively referred to as the "Plans").

                              5.22.2            Except as disclosed  on Schedule
          5.22 each Plan (and each  trust  forming a part of such Plan) has been
          administered and operated in all respects in accordance with its terms
          and applicable law.

                              5.22.3        Except as disclosed on Schedule 5.22
          no pension  promises have been issued which are not fully funded in or
          with banks,  pension funds or insurance  companies in accordance  with
          Danish law and all due premiums have been made or duly reserved for.

                              5.22.4              Other than for claims   in the
          ordinary  course of business for benefits under the Plans,  and except
          as disclosed on Schedule 5.22 there are no actions,  suits,  claims or
          proceedings,  pending  or  threatened,  nor to the best  knowledge  of
          In2itive does there exist any basis therefor,  which may result in any
          liability  with respect to any Plan to In2itive,  or any Plan or trust
          thereof.

                  5.23   Licenses  and   Permits.   In2itive  has  all  material
governmental licenses and permits and other material governmental authorizations
and approvals required for the conduct of its businesses as presently conducted.

                  5.24 Relations With Suppliers and Customers.  Neither In2itive
nor the  Shareholders  is required  to provide  any  bonding or other  financial
security  arrangements in connection  with any transaction  with any customer or
supplier. Neither In2itive nor the Shareholders has received any notice that any
customer  or supplier of  In2itive  will cease to do business  with  In2itive or
refuse to do business  with SPSS,  or  In2itive  after the  consummation  of the
transactions contemplated hereby.

                  5.25 Interests in Competitors, Suppliers and Customers. Except
as set forth in  Schedule  5.25,  none of the  Shareholders  nor any  manager or
director of In2itive or any entity  controlled  by or under common  control with
In2itive  has a  greater  than  five  percent  (5%)  ownership  interest  in any
competitor,  supplier  or  customer  of  In2itive  or any  property  used in the
operation of its businesses.

                  5.26        Employment Matters.  Schedule 5.26 contains a list
of all oral and written  employment or consulting  contracts or other agreements
or  arrangements  to which In2itive is a party or by which it is bound,  and all
these contracts and arrangements are in full force and

                                       20

<PAGE>



effect.  Except as disclosed on Schedule 5.26, there are no other oral contracts
or arrangements of the type described in the preceding sentence. There have been
no claims of defaults and there are no facts or  conditions  which if continued,
or with the giving of notice,  will result in a default under these contracts or
arrangements.

                  5.27  Related  Transactions.  In2itive has not made or entered
into any loan, contract,  lease,  commitment,  arrangement or understanding with
any of its directors, managers, employees, shareholders or any entity controlled
by  or  under  common   control  with  In2itive,   except  normal   compensation
arrangements with managers, all of which are reasonable in amount and terminable
by In2itive on 30 days' notice.

                  5.28   Brokers  and   Finders.   Neither   In2itive   nor  the
Shareholders  (nor  any of  their  respective  managers,  directors,  employees,
affiliates,  associates,  or family members), has employed any broker, finder or
investment banker, or incurred any liability for any brokerage fees, commissions
or  finders'  fees  in  connection  with  this  Agreement  or  the  transactions
contemplated hereby.

                  5.29   Questionable   Payments.   Neither   In2itive  nor  the
Shareholders,  nor any  director,  manager,  agent,  employee  or  other  person
associated with or acting on behalf of In2itive has directly or indirectly:  (a)
used any corporate funds for unlawful  contributions,  gifts,  entertainment  or
other unlawful  expenses relating to political  activity;  (b) made any unlawful
payment  to  government  officials  or  employees  or to  political  parties  or
campaigns from corporate  funds;  (c)  established or maintained any unlawful or
unrecorded fund of corporate monies or other assets;  (d) intentionally made any
false or  fictitious  entry on the books or  records of  In2itive;  (e) made any
bribe,  payoff,  influence payment,  kickback or other unlawful payment;  or (f)
made any bribe or other payment of a similar or comparable  nature to any person
or entity, private or public,  regardless of form, to obtain favorable treatment
in securing business or to obtain special concessions or treatment.

                  5.30 Books and Records. The books and records of In2itive have
been   maintained  in  accordance  with  Danish   bookkeeping   regulations  and
commercially  reasonable  business  and  bookkeeping  practices  and  accurately
reflect in all  material  respects the  business,  assets,  properties,  rights,
obligations, liabilities and operations of In2itive.

                  5.31 Bank Accounts;  Safe Deposit Boxes.  Included on Schedule
5.31 are the names and locations of all banks in which  In2itive has accounts or
safe deposit boxes and the names of all persons authorized to draw thereon or to
have access thereto.

                  5.32 Full Disclosure.  In2itive and the Key Shareholders  have
disclosed  to SPSS all facts  material to the  business,  operations,  assets or
condition (financial or otherwise) of In2itive. To the best knowledge of the Key
Shareholders,  no  representation  or  warranty  by  the  Shareholders  in  this
Agreement,  any  of the  Schedules  attached  hereto  or  any  other  documents,
exhibits, certificates or schedules furnished to SPSS pursuant hereto, contains,
or as of the Closing Date will contain, any untrue statement of a material fact,
or omits, or as of the Closing

                                       21

<PAGE>



Date will omit, to state any material fact  necessary to make the  statements or
facts contained therein not misleading. The copies of all documents furnished to
SPSS  hereunder  are true and complete  copies of the  originals  thereof in all
material respects.

                  5.33  Effect  of   Certificates.   All   representations   and
warranties  made in certificates of In2itive and the managers of In2itive or the
Key Shareholders,  or any of the foregoing,  delivered hereunder shall be deemed
to be additional representations and warranties of the Shareholders.

                  5.34        Accounting  Matters.   Neither  In2itive  nor  the
Shareholders has taken or agreed to take any action that would prevent SPSS from
accounting for the business  transaction to be effected by the  Acquisition as a
pooling of interests.


                                   ARTICLE VI

                     REPRESENTATIONS AND WARRANTIES OF SPSS

         SPSS represents and warrants to In2itive as follows:

                  6.1 Organization and Qualification. SPSS is a corporation duly
organized,  validly existing and in good standing under the laws of the State of
Delaware and has the corporate  power and authority to enter into this Agreement
and to consummate the transactions contemplated hereby.

                  6.2 Authority.  SPSS has full power, capacity and authority to
execute  and  deliver  this  Agreement  and  to  consummate   the   transactions
contemplated  hereby.  The  execution  and  delivery of this  Agreement  and the
consummation of the transactions  contemplated hereby have been duly and validly
authorized by SPSS, and no other  corporate  proceedings on the part of SPSS are
necessary  to  authorize  this  Agreement  or  to  consummate  the  transactions
contemplated  hereby.  This  Agreement  has been duly and validly  executed  and
delivered by SPSS and constitute  legal,  valid and binding  agreements of SPSS,
except  that (i) such  enforcement  may be  subject to  bankruptcy,  insolvency,
reorganization,  moratorium  or other  similar  laws now or  hereafter in effect
relating  to  creditors'  rights,  (ii) the remedy of specific  performance  and
injunctive  and other  forms of  equitable  relief may be  subject to  equitable
defenses  and to the  discretion  of  the  court  before  which  any  proceeding
therefore  may be  brought,  and (iii)  enforceability  of  Section  4.5 of this
Agreement  may be  subject  to  limitations  of  public  policy  under and State
securities laws.

                  6.3  Consents  and  Approvals.   There  is  no  authorization,
consent,  order or approval of, or notice to or filing with,  any  individual or
entity  required  to be obtained  or given in order for SPSS to  consummate  the
transactions  contemplated hereby and fully perform their obligations hereunder.
SPSS has received a form of the pooling letter referred to in Section 12.8

                                       22

<PAGE>



herein,  and has no reason to believe that a final letter from KPMG Peat Marwick
LLP will not be delivered as required under Section 12.7.

                  6.4  Absence  of  Conflicts.   The  execution,   delivery  and
performance  by SPSS of  this  Agreement  (including,  without  limitation,  the
offering, issuance and sale of the SPSS Common Stock in the Acquisition) and the
consummation by SPSS of the transactions  contemplated  hereby will not, with or
without the giving of notice or the lapse of time, or both, (i) conflict with or
result in a breach or default  under any term or  condition  of the  Articles of
Incorporation  or By-laws of SPSS,  (ii) violate any provision of law,  statute,
rule or  regulation  to which SPSS is or was subject,  (iii)  violate any order,
judgment or decree which is or was  applicable to SPSS or (iv) conflict with, or
result in a breach or default under,  any term or condition of the  Certificates
of  Incorporation  or By-Laws of SPSS or any  agreement or other  instrument  to
which  either of them is a party or by which  either  of them is  bound,  or (v)
cause,  or give any person grounds to cause the maturity of any debt,  liability
or  obligation  of SPSS to be  accelerated  or increase  any such  liability  or
obligation.

                  6.5  Capitalization.  The  authorized  capital  stock  of SPSS
consists  solely of  50,000,000  shares of SPSS Common  Stock,  of which,  as of
September 30, 1997,  approximately 8,637,440 shares were issued and outstanding.
All the issued and  outstanding  shares of SPSS Common Stock are validly issued,
fully paid and  nonassessable.  There are no options,  warrants or other rights,
agreements  or  commitments  obligating  of SPSS to issue  shares of its capital
stock except for stock  options to purchase  approximately  1,807,482  shares of
SPSS Common  Stock  pursuant to various  SPSS option  plans and  agreements  and
employee  rights to purchase SPSS Common Stock  pursuant to SPSS' employee stock
purchase plans.

                  6.6  Reports  and  Financial  Statement.  SPSS has  previously
furnished  In2itive  with true and complete  copies of its (i) Annual  Report on
Form 10-K for the fiscal  year ended  December  31,  1996 as filed with the SEC,
(ii) its  Quarterly  Reports on Form 10-Q for the quarters  ended March 31, 1997
and June 30,  1997,  as filed  with the SEC and (iii) its  report on Form 8-K to
reflect the acquisition of Quantime Limited filed October 15, 1997 as filed with
SEC  (collectively the "SPSS Reports").  The audited and unaudited  consolidated
financial  statements  of SPSS (the "SPSS  Financial  Statements")  included  or
incorporated  by  reference  into  such  SPSS  Reports  have  been  prepared  in
accordance with generally accepted accounting principles applied in a consistent
basis  (except as may be indicated  therein or in the notes  thereto) and fairly
present the financial position of SPSS and its consolidated subsidiaries,  as of
the dates  thereof,  and the results of their  operations and cash flows for the
periods then ended subject, in the case of the unaudited  financial  statements,
to normal  year-end  adjustments  which  are not  materially  adverse.  The SPSS
Reports  required to be filed by SPSS under the Exchange Act since  December 31,
1996 and its 1997 proxy statement have been filed by SPSS in a timely manner, to
the  best of  SPSS's  knowledge,  were  complete  and  correct  in all  material
respects,  as of the dates at which the information  was furnished,  and, to the
best of SPSS's knowledge,  contained no untrue statement of a material fact, nor
omitted  to state a material  fact or  disclose  any  liability  required  to be
included therein or necessary in light of the  circumstances  under which it was
made in order to make the statements made therein not misleading.

                                       23

<PAGE>




                  6.7 Litigation  and  Administrative  Proceedings.  There is no
claim,  action,  suit,  proceeding or  investigation  in any court or before any
governmental or regulatory  authority pending or threatened against or affecting
SPSS which  seeks to enjoin or obtain  damages  in  respect of the  transactions
contemplated hereby.

                  6.8 Brokers and  Finders.  SPSS has not  employed  any broker,
finder or investment  banker,  or incurred any liability for any brokerage fees,
commissions  or  finders'  fees  in  connection   with  this  Agreement  or  the
transactions contemplated by this Agreement.

                  6.9 SPSS Common  Stock.  The SPSS Common Stock to be issued in
the Acquisition, when delivered in accordance with this Agreement, shall be duly
authorized, validly issued, fully paid and nonassessable.

                  6.10  Effect  of   Certificates.   All   representations   and
warranties  made in certificates of SPSS and the officers of SPSS, or any of the
foregoing,  delivered hereunder shall be deemed to be additional representations
and warranties of SPSS.

                  6.11 Pooling of Interests Accounting.  SPSS has consulted with
KPMG Peat  Marwick LLP as its  independent  auditors,  regarding  the ability to
qualify  for  pooling  of  interests  accounting  relating  to the  transactions
contemplated hereunder. Such auditors have not stated to SPSS any material doubt
that  pooling of  interests  accounting  will be  available  with respect to the
transactions  contemplated  hereunder.  Based on its discussions  with KPMG Peat
Marwick  LLP, and assuming  the  accuracy of the  information  in the  Schedules
attached  hereto and the other  information  disclosed  in  connection  with the
transactions  contemplated by this  Agreement,  SPSS believes that the condition
precedent contained in Section 12.8 hereof will be satisfied.

                  6.12  Dividends and  Distributions.  From December 31, 1996 to
the date hereof,  SPSS has not  declared or paid any  dividends on any shares of
its capital  stock nor has it made any other  payments or  distributions  to its
stockholders.

                  6.13 Marketable  Title.  SPSS owns and has good and marketable
title to the SPSS  Common  Stock,  free and  clear of any lien,  pledge,  claim,
encumbrance, restriction or right of any third party of any kind. On the Closing
Date, the Stockholders will acquire good and marketable title to the SPSS Common
Stock, free and clear of the aforesaid, including without limitation, any of the
foregoing set forth in the Bylaws of SPSS.

                  6.14 Reliance on Responses.  SPSS, its agents, counsellors and
other  representatives  have had an  opportunity to  interrogate  In2itive,  the
management of In2itive and the auditor of In2itive about In2itive, its accounts,
its activities,  its management,  its personnel and employment  agreements,  its
lease  contracts and all other  material third party  contracts,  its supply and
distribution  contracts,  its insurance coverage,  its intangible rights and all
other  contract  rights  and  obligations  related  to or  referred  to in  this
Agreement and the attached schedules.  SPSS has relied on the accuracy of all of
the responses given it by In2itive, its management, and its auditor

                                       24

<PAGE>



in connection with the transactions  contemplated by this Agreement and all such
questions have been satisfactorily answered.

                                   ARTICLE VII

                    COVENANTS RELATING TO CONDUCT OF BUSINESS

                  7.1         Conduct of Business

                  (a) Conduct of Business  by  In2itive.  During the period from
the date of this Agreement to the Closing Date of the Acquisition Agreement, the
Shareholders  shall  ensure that  In2itive  shall  carry on its  business in the
usual,  regular  and  ordinary  course  in  substantially  the  same  manner  as
heretofore conducted and, to the extent consistent therewith, use all reasonable
efforts to preserve intact its current  business  organizations,  keep available
the services of its current managers and employees,  preserve its  relationships
with customers,  suppliers, licensor, licensees,  distributors and others having
business  dealings  with it to the end that its goodwill and ongoing  businesses
shall be unimpaired at the Closing Date of the  Acquisition  Agreement.  Without
limiting the  generality  of the  foregoing,  during the period from the date of
this Agreement to the Closing Date of the Acquisition Agreement,  In2itive shall
not:

                  (i) declare,  set  aside  or pay any dividends on, or make any
other distributions in respect of, any of its capital stock;

                  (ii) split,  combine or reclassify any of its capital stock or
issue or authorize  the issuance of any other  securities in respect of, in lieu
of or in  substitution  for shares of its capital  stock or purchase,  redeem or
otherwise  acquire  any  shares  of  capital  stock  of  In2itive  or any  other
securities thereof or any rights, warrants or options to acquire any such shares
or other securities;

                  (iii) issue,  deliver,  sell, pledge or otherwise encumber any
shares of its capital  stock,  any other  voting  securities  or any  securities
convertible  into,  or any rights,  warrants,  or options to  acquire,  any such
shares, voting securities or convertible securities;

                  (iv)      other than as disclosed elsewhere in this Agreement,
amend its Articles of Incorporation,  By-laws  or  other  comparable  charter or
organizational documents;

                  (v)   acquire   or  agree  to   acquire   (A)  by  merging  or
consolidating  with, or by purchasing a substantial portion of the assets of, or
by any  other  manner,  any  business  or any  corporation,  partnership,  joint
venture,  association or other business  organization or division thereof or (B)
any assets that individual or in the aggregate are material to In2itive,  except
purchases of inventory in the ordinary  course of business  consistent with past
practice;

                  (vi)      sell, lease, license, mortgage or otherwise encumber
or subject to any lien or otherwise dispose of any of its properties or assets;

                                       25

<PAGE>




                  (vii) (A)  incur  any  indebtedness,  except  for  short  term
borrowings  incurred in the  ordinary  course of business  consistent  with past
practice,  or (B) make any  loans,  advances  or  capital  contributions  to, or
investments in, any other person;

                  (viii) make or agree to make any  equipment  leases or any new
capital expenditure or capital  expenditures which are individually in excess of
$5,000 or in the aggregate are in excess of $10,000;

                  (ix)   make any tax election that could reasonably be expected
to have a material  adverse  effect  or  settle  or  compromise  any  income tax
liability;

                  (x) pay, discharge,  settle or satisfy any claims, liabilities
or  obligations  (absolute,  accrued,  asserted  or  unasserted,  contingent  or
otherwise),  other than the payment, discharge or satisfaction,  in the ordinary
course of business  consistent  with past practice or in  accordance  with their
terms, of liabilities  reflected or reserved against in, or contemplated by, the
most recent  Financial  Statements or incurred  since the date of such financial
statements in the ordinary course of business consistent with past practice;

                  (xi) except in the ordinary course of business,  modify, amend
or terminate any material  contract or agreement to which In2itive is a party or
waive, release or assign any material rights or claims thereunder;

                  (xii)  take any  action  that  (without  giving  effect to any
action  taken or  agreed  to be taken  by SPSS or any of its  affiliates)  would
prevent SPSS from accounting for the business  combination to be effected by the
Acquisition  as a pooling of interests or from  treating  the  Acquisition  as a
"reorganization" under Section 368(a) of the Code; or

                  (xiii)  take any  action to  institute  any new  severance  or
termination  pay practices with respect to any directors,  managers or employees
of  In2itive  or to  increase  the  benefits  payable  under  its  severance  or
termination pay practices in effect on the date hereof; and

                  (xiv) (except for salary  increases in the ordinary  course of
business and  consistent  with past  practice)  adopt or amend,  in any material
respect,  except  as may be  required  by  applicable  law  or  regulation,  any
collective  bargaining,  bonus,  profit  sharing,  compensation,  stock  option,
restricted stock,  pension,  retirement,  deferred  compensation,  employment or
other employee benefit plan, agreement, trust, fund, plan or arrangement for the
benefit or welfare of any directors, managers or employees.

                  (xv) authorize  any of, or commit or agree to take any of, the
foregoing actions;

                  (b)  Negotiations  with Others.  Neither the  Shareholders nor
In2itive shall, directly or indirectly, through any manager, director, employee,
representative  or agent  thereof,  solicit or  encourage  (including  by way of
furnishing nonpublic information) or take other action

                                       26

<PAGE>



to facilitate  any inquiries or the making of any proposal that  constitutes  or
may  reasonably  be  expected to lead to an Business  Combination  Proposal  (as
defined below) from any person,  or engage in any  discussions  or  negotiations
relating thereto or in furtherance  thereof or accept any acquisition  proposal.
For the  purposes  of  this  Agreement  "Business  Combination  Proposal"  means
inquiries  or  proposals  regarding  (i)  any  merger,  consolidation,  sale  of
substantial assets or similar transactions involving In2itive,  (ii) sale of 10%
or more of the  outstanding  shares of  capital  stock of  In2itive  or  similar
transactions involving In2itive, or (iii) any public announcement of a proposal,
plan or intention to do any of the  foregoing or any  agreement to engage in any
of the foregoing.  In2itive and the  Shareholders  shall  immediately  cease and
cause to be terminated any existing discussions or negotiations with any parties
conducted  prior  to the  date  of this  Agreement  with  respect  to any of the
foregoing.

                  (c)  Notification of Certain Matters.  The Shareholders  shall
give prompt notice to SPSS and SPSS shall give prompt notice to the Shareholders
of:  (i) the  occurrence  or  failure  to occur,  of any event  which such party
believes  would be  likely  to cause any of its  representations  or  warranties
contained in this Agreement to be untrue or inaccurate at any time from the date
hereof to the Closing Date and (ii) any failure of the  Shareholders  on the one
hand or SPSS on the other hand, as the case may be, or of any officer,  manager,
director,  employee or agent  thereof,  to comply with or satisfy any  covenant,
condition  or  agreement  to be  complied  with or  satisfied  by it  hereunder;
provided,  however,  that  failure to give such notice  shall not  constitute  a
waiver of any defense that may be validly asserted.

                  (d) Pooling Accounting. The Shareholders and SPSS hereby agree
(i) not to take any action, based on information or advice provided by KPMG Peat
Marwick  LLP,  that  would  adversely  affect  the  ability of SPSS to treat the
Acquisition  as a pooling of  interests,  and (ii) to take such action as may be
reasonably  required to negate the impact of any past  actions  which,  based on
information or advice provided by KPMG Peat Marwick LLP, would adversely  affect
the  ability  of SPSS to treat the  Acquisition  as a pooling  of  interests  in
accordance with generally accepted accounting  principles  consistently  applied
and all published rules, regulations and policies of the SEC.

                                  ARTICLE VIII

                          COVENANTS OF THE SHAREHOLDERS

         The Shareholders covenant as follows:

                  8.1 Consents and Approvals.  The Shareholders agree to use all
reasonable efforts to make all registrations, filings and applications, and give
all notices and obtain all governmental and other consents,  approvals,  orders,
qualifications  and waivers  necessary for the  consummation of the transactions
contemplated  by, or the performance by In2itive and the  Shareholders of any of
their  obligations  under,  this  Agreement,  or  which  may  become  reasonably
necessary or desirable in  connection  with any of the  foregoing,  in each case
upon terms and conditions reasonably satisfactory to SPSS and its counsel.

                                       27

<PAGE>




                  8.2 Tax Returns.  SPSS will cooperate with the Shareholders to
file,  or cause to be  prepared  and  filed,  on a timely  basis all  income tax
returns of  In2itive  due after the  Closing  Date and  attributable  to periods
ending on or before the  Closing  Date (the  "Returns").  SPSS shall  direct the
preparation and filing of the Returns; provided,  however, that the Shareholders
shall be  responsible  for  paying  any  Taxes to the  extent  of the  indemnity
therefor.

                  8.3         Access to Information.

                  (a) From the signing of this  Agreement  to the Closing  Date,
the  Shareholders  shall allow SPSS to have  complete  access at all  reasonable
times to In2itive's managers,  employees, agents, properties, books and records,
and shall furnish SPSS all financial,  operating and other data and  information
as SPSS  including,  but not limited to such  information  as may be  reasonably
requested  from  time  to time  concerning  the  underlying  tax  basis  of each
shareholders stock of In2itive,  through its officers,  employees or agents, may
reasonably request.

                  (b) No  investigation  pursuant  to  this  Section  8.3  shall
affect,  add to or  subtract  from  any  representations  or  warranties  or the
conditions to the obligations of the parties hereto to effect the Acquisition.

                  8.4 Affiliates and Certain Stockholders.  Prior to the Closing
Date,  the  Shareholders  shall  cause  In2itive  to  deliver  to SPSS a  letter
identifying  all  persons  who are  "affiliates"  of  In2itive  for  purposes of
applicable   interpretations   regarding  the  pooling-of-interests   method  of
accounting  (the  "In2itive  Affiliates").  The  Shareholders  shall  cause each
In2itive  Affiliate to deliver to SPSS on or prior to the Closing Date a written
agreement   substantially  in  the  form  attached  as  Exhibit  C  hereto  (the
"Affiliates   Letter").   If  the  Acquisition   would  otherwise   qualify  for
pooling-of-interests accounting treatment, shares of SPSS Common Stock issued to
such  affiliates  of In2itive in exchange for Shares  shall not be  transferable
until such time as  financial  results  covering  at least  thirty  (30) days of
combined  operations of SPSS and In2itive have been published within the meaning
of Section 201-01 of the SEC's  Codification  of Financial  Reporting  Policies,
regardless  of whether each such  affiliate  has provided the written  agreement
referred  to in this  Section  8.4,  except to the extent  permitted  by, and in
accordance with, Accounting Series Release 135 and Staff Accounting Bulletins 65
and 76 (such date is hereinafter  referred to as the "Earnings  Release  Date").
Any shares of SPSS Common Stock held by  Affiliates  shall not be  transferable,
regardless  of whether each such  Affiliate  has provided the written  agreement
referred  to in this  Section  8.4,  if such  transfer,  either  alone or in the
aggregate with other  transfers by Affiliates,  would preclude SPSS's ability to
account for the  business  combination  to be effected by the  Acquisition  as a
pooling of interests.  The  Shareholders  shall ensure that  In2itive  shall not
register the transfer of any certificate representing capital stock of In2itive,
unless  such  transfer  is made in  compliance  with the  foregoing.  Except  as
provided  in  Article 4 hereof,  SPSS  shall not be  required  to  maintain  the
effectiveness of any registration  statement under the 1933 Act for the purposes
of resale of the SPSS Common Stock by Affiliates.


                                       28

<PAGE>



                  8.5 Further A surances.  The  Shareholders  shall from time to
time,  at the  request  of SPSS and  without  further  cost or  expense to SPSS,
execute and deliver such other documents and take such other actions as shall be
reasonably  necessary  or  appropriate  to  consummate  fully  the  transactions
contemplated hereby.


                                   ARTICLE IX

                                COVENANTS OF SPSS

                  SPSS covenants as follows:

                  9.1 Retention of Records.  After the Closing  Date,  SPSS will
retain all of  In2itive's  books and records in their  possession  in accordance
with the requirements of Danish law and SPSS's policies for retention of its own
books and records, and upon reasonable notice, for a reasonable purpose,  during
SPSS's  regular  business  hours and at reasonable  intervals,  will provide the
Shareholders,  and their  respective  agents and  representatives  designated in
writing,  access to such  books and  records,  concerning  periods  prior to the
Closing Date.

                  9.2        Severance Packages.  Within a reasonable time after
the  Closing  Date,  SPSS  shall provide  reasonable  severance  packages, as it
determines  in  its sole discretion, to In2itive employees who are  not retained
for employment with SPSS.

                  9.3 Further  Assurances.  SPSS shall from time to time, at the
request  of  the  Shareholders  and  without  further  cost  or  expense  to the
Shareholders,  execute  and  deliver  such other  documents  and take such other
actions as shall be reasonably  necessary or appropriate to consummate fully the
transactions contemplated hereby.

                  9.4 Affiliates and Certain Stockholders.  Prior to the Closing
Date, SPSS shall identify all persons who are  "affiliates" of SPSS for purposes
of  applicable  interpretations  regarding  the  pooling-of-interests  method of
accounting  (the "SPSS  Affiliates").  SPSS shall cause each SPSS  Affiliate  to
deliver  to  SPSS  on  or  prior  to  the  Closing  Date  a  written   agreement
substantially  in the form  attached  as Exhibit D hereto  (the "SPSS  Affiliate
Letter").  If the Acquisition would otherwise  qualify for  pooling-of-interests
accounting  treatment,  SPSS  Affiliates  shall not  transfer any shares of SPSS
Stock until such time as financial results covering at least thirty (30) days of
combined  operations of SPSS and In2itive have been published within the meaning
of Section 201-01 of the SEC's  Codification  of Financial  Reporting  Policies,
regardless  of whether each such  affiliate  has provided the written  agreement
referred  to in this  Section  9.4,  except to the extent  permitted  by, and in
accordance with, Accounting Series Release 135 and Staff Accounting Bulletins 65
and 76 (such date is hereinafter  referred to as the "Earnings  Release  Date").
Any  shares  of  SPSS  Common  Stock  held  by  SPSS  Affiliates  shall  not  be
transferable,  regardless  of whether each such SPSS  Affiliate has provided the
written  agreement  referred to in this  Section 9.4, if such  transfer,  either
alone  or in the  aggregate  with  other  transfers  by SPSS  Affiliates,  would
preclude SPSS's ability to account for the business

                                       29

<PAGE>



combination to be effected by the  Acquisition  as a pooling of interests.  SPSS
shall  ensure  that it  shall  not  register  the  transfer  of any  certificate
representing  capital stock of SPSS,  unless such transfer is made in compliance
with the foregoing.


                                    ARTICLE X

                                MUTUAL COVENANTS

                  Each of the parties hereto covenants as follows:

                  10.1 Confidentiality. Except as disclosed on Schedule 10.1 and
as  otherwise  required  by  law  or  judicial  or  administrative  proceedings,
including  proceedings  between the  parties  with  respect to the  transactions
contemplated  hereby, and then only to the extent specifically  required by such
proceedings,  and except for public announcements on the advice of counsel, each
of the parties agrees not to (i) disclose any Confidential  Information (defined
hereinbelow)  of any  other  party,  or the  terms  of  this  Agreement,  to any
individual or entity (other than its directors,  officers, managers,  employees,
agents and representatives with a need to know such Confidential  Information in
order to  consummate  the  transactions  contemplated  hereby  and then  only if
reasonable  steps are taken with such  parties to preserve  the  confidentiality
thereof) or (ii) use any  Confidential  Information  for any purpose other than,
with  respect  to  SPSS,   operating   the  acquired   business.   "Confidential
Information"  shall mean any secret or confidential  information of the software
business,  In2itive,  SPSS, including, but not limited to, customer information,
financial information,  technical information, details or information concerning
contracts,  trade secrets,  marketing information or any other data, information
or proprietary  information of or relating to the software  business,  In2itive,
SPSS or any affiliate  thereof,  or their  respective  products or services.  No
obligations  shall  exist  under this  Agreement  with  respect to  Confidential
Information  that (i) is publicly known at the time of the disclosure or becomes
publicly known through no wrongful act or failure of In2itive, the Shareholders,
SPSS,  (ii) is  disclosed  by a third party  which does not have a  confidential
relationship  with In2itive,  the  Shareholders,  SPSS, and which was rightfully
acquired by third party, or (iii) is legally compelled to be disclosed  pursuant
to a  subpoena,  summons,  order  or other  judicial  or  governmental  process,
provided that the parties  hereto  provide  prompt notice of any such  subpoena,
summons,  order or other judicial or governmental  process to such other parties
of the  Confidential  Information,  so as to allow the parties an opportunity to
oppose such process.

                  10.2  Consistent  Tax  Reporting.  The  parties  agree for tax
purposes to report the transactions contemplated by this Agreement, and to treat
any subsequent  related  transactions  or items,  in a manner  consistent in all
respects  with the terms and  provisions  of this  Agreement.  Each party  shall
cooperate  with the other parties as  appropriate  for all relevant tax purposes
relating to the transactions contemplated by this Agreement.


                                       30

<PAGE>



                  10.3 Cooperation. The parties agree to cooperate for all other
reasonable  purposes  after the Closing,  including with respect to any audit by
any taxing authority of any of the income tax or other tax returns of In2itive.


                                   ARTICLE XI

                  CONDITIONS TO OBLIGATIONS OF THE SHAREHOLDERS

         The  obligations of the  Shareholders  to consummate  the  transactions
contemplated  hereby is subject to the  satisfaction  on or prior to the Closing
Date of the following conditions:

                  11.1  Representations and Warranties.  The representations and
warranties of SPSS shall be true and accurate on and as of the Closing Date with
the same effect as though such  representations  and warranties had been made on
and as of such date.

                  11.2  Performance.  SPSS shall have  performed in all material
respects all covenants and agreements required by this Agreement to be performed
by them on or before the Closing Date.

                  11.3 Filings;  Consents;  Waiting Periods.  All registrations,
filings,   applications,   notices,  transfers,   consents,  approvals,  orders,
qualifications,  waivers  and other  actions  listed on  Schedule  6.3 hereto or
otherwise  required  of any  persons  or  governmental  authorities  or  private
agencies in connection with the consummation of the transactions contemplated by
and the performance by SPSS of their respective obligations under this Agreement
shall have been made or obtained and all applicable  waiting  periods shall have
expired or been terminated.

                  11.4 No Litigation.  No action,  suit or proceeding shall have
been  instituted  by any person or entity,  or  threatened  by any  governmental
agency or body, before a court or governmental  body, to restrain or prevent the
consummation of the transactions  contemplated by, or the performance by SPSS of
its obligations  under,  this Agreement or which seeks other relief with respect
to any of such  transactions  or which  could  reasonably  be expected to have a
materially  adverse effect on the  businesses,  results of  operations,  assets,
financial condition or prospects of SPSS. At the Closing Date, there shall be no
injunction,  restraining  order  or  decree  of  any  nature  of  any  court  or
governmental  agency  or  body  in  effect  which  restrains  or  prohibits  the
consummation of the transactions contemplated by this Agreement.

                  11.5 Pooling.  In2itive shall have discussed with and received
approval  from KPMG Peat Marwick LLP as to any action to be taken by or inaction
of  In2itive of  In2itive  or the  Shareholders  between the date hereof and the
Closing  Date  which  would  or  may  prevent  SPSS  from   accounting  for  the
transactions  contemplated  hereunder  as a  pooling  of  interests  by SPSS for
purposes of its  consolidated  financial  statements  under  generally  accepted
accounting principles and applicable SEC rules and regulations.  No action shall
have been taken by any

                                       31

<PAGE>



government authority or any statute,  rule, regulation or order,  promulgated or
issued by any governmental  authority,  or any proposal made for any such action
by any governmental  authority which is reasonably likely to be put into effect,
that  would  prevent  SPSS from  accounting  for the  transactions  contemplated
hereunder as a pooling of interests.

                  11.6       Delivery.  At the closing the documents referred in
Section 13.1(b) shall be delivered to the Shareholders.

                  11.7      Legal Opinion.  The Shareholders shall have received
the written opinion dated  the  Closing  Date  of  counsel to SPSS referenced in
Section 13.1(b).


                                   ARTICLE XII

                        CONDITIONS TO OBLIGATIONS OF SPSS

                  The  obligation  of  SPSS  to  consummate   the   transactions
contemplated  hereby is subject to the  satisfaction  on or prior to the Closing
Date of the following conditions:

                  12.1  Representations and Warranties.  The representations and
warranties  of the  Shareholders  shall  be true and  accurate  on and as of the
Closing Date with the same effect as though such  representations and warranties
had been made on and as of such date.

                  12.2 Performance. The Shareholders shall have performed in all
material respects all covenants and agreements  required by this Agreement to be
performed by it on or before the Closing Date.

                  12.3 Filings;  Consents;  Waiting Periods.  All registrations,
filings,   applications,   notices,  transfers,   consents,  approvals,  orders,
qualifications,  waivers and other  actions of any kind listed on the  schedules
attached hereto or otherwise required of any persons or governmental authorities
or private  agencies in connection  with the  consummation  of the  transactions
contemplated  by, and the performance by the  Shareholders  of their  respective
obligations  under  this  Agreement  shall  have been made or  obtained  and all
applicable  waiting periods shall have expired or been terminated,  in each case
upon terms and conditions reasonably satisfactory to SPSS.

                  12.4 No Litigation.  No action,  suit or proceeding shall have
been  instituted  by any person or entity,  or  threatened  by any  governmental
agency or body, before a court or governmental  body, to restrain or prevent the
consummation  of the  transactions  contemplated  by, or the  performance by the
Shareholders  of their  respective  obligations  under,  this Agreement or which
seeks  other  relief  with  respect to any of such  transactions  or which could
reasonably be expected to have a materially  adverse  effect on the  businesses,
results of operations,  assets, financial condition or prospects of In2itive. At
the Closing Date, there shall be no injunction,  restraining  order or decree of
any nature of any court or governmental agency or body in effect

                                       32

<PAGE>



which restrains or prohibits the consummation of the  transactions  contemplated
by this Agreement.

                  12.5 Non-Compete Agreements.  SPSS and each of the individuals
listed on Schedule 11.5 shall  have entered  into  a Non-Competition  Agreement,
substantially in the attached hereto as Exhibit E.

                  12.6  Legal  Opinion.  SPSS shall have  received  the  written
opinion,  dated the Closing Date, of Mazanti-Andersen & Korso Jensen, counsel to
In2itive, substantially in the form attached hereto as Exhibit F.

                  12.7 Pooling.  SPSS shall have received from KPMG Peat Marwick
LLP a letter  dated as of the Closing  Date,  in form and  substance  reasonably
acceptable to SPSS, and stating that the  transactions to be effected  hereunder
may be  accounted  for as a pooling of  interests  by SPSS for  purposes  of its
consolidated financial statements under generally accepted accounting principles
and applicable SEC rules and regulations. No action shall have been taken by any
government authority or any statute,  rule, regulation or order,  promulgated or
issued by any governmental  authority,  or any proposal made for any such action
by any governmental  authority which is reasonably likely to be put into effect,
that  would  prevent  SPSS from  accounting  for the  transactions  contemplated
hereunder as a pooling of interests.

                  12.8 Shareholder Approval.  This Agreement and the Acquisition
shall have been approved and  adopted  by  the  consent  of  the Shareholders in
accordance  with  the  DCA  and  the  Articles  of  Incorporation and By-laws of
In2itive.

                  12.9    Affiliates and Certain Stockholders.  (a) Prior to the
Closing  Date,  the  Shareholders  shall  cause  In2itive to deliver to SPSS the
Affiliates  Letters  in  form  and  substance  satisfactory  to SPSS in its sole
discretion.

                  12.10   Delivery.  At the Closing, the documents referenced in
Section 13.1(a) shall be delivered to SPSS.


                                  ARTICLE XIII

                               CLOSING DELIVERIES

                  13.1(a)     The following deliveries shall be made to SPSS at 
the Closing:

                                     (i) Books  and  Records.  The  Shareholders
                  shall have caused to be  delivered  to SPSS all of  In2itive's
                  books and  records,  including  without  limitation  the stock
                  transfer  and  minute  books  and   financial   records.   The
                  Shareholders  shall cause the transfer of the ownership of the
                  shares of In2itive to SPSS to have been duly registered in the
                  share register.

                                       33

<PAGE>




                                    (ii) Legal Opinion.  The Shareholders  shall
                  cause to be delivered to SPSS the written legal opinion, dated
                  the  Closing  Date,  of  Mazanti-  Andersen,  Korso  Jensen  &
                  Partners  counsel  to  In2itive,  substantially  in  the  form
                  attached hereto as Exhibit F.

                                   (iii) Consents.  The Shareholders shall cause
                  In2itive  to  deliver  to  SPSS  all  consents  and  approvals
                  required   in   connection   with  the   performance   by  the
                  Shareholders of their obligations under this Agreement and the
                  consummation   by  the   Shareholders   of  the   transactions
                  contemplated hereby and thereby,  including the consent by the
                  Board of  Directors  of In2itive to the transfer of the Shares
                  to SPSS.

                                    (iv) Closing Certificates.  The Shareholders
                  shall  deliver,  or cause  to be  delivered,  to SPSS  closing
                  certificates  in the form  attached  as Exhibit G hereto,  and
                  such other documents as SPSS and its counsel shall  reasonably
                  request.

                                     (v) Charter; Certificates. The Shareholders
                  shall cause to be delivered  to SPSS the Shares duly  endorsed
                  to SPSS,  In2itive's Articles of Incorporation,  as amended to
                  the Closing  Date,  certified by the  Commerce  and  Companies
                  Registry  and a Certified  Copy of Compiled  Summary  from the
                  Commerce and Companies Registry and each other jurisdiction in
                  which In2itive is required to be qualified.

                                    (vi)        Affiliate  Letters.  SPSS  shall
                  have received an executed Affiliate Letter from each  In2itive
                  Affiliate.

                                   (vii) Stock Pledge and Escrow Agreement.  The
                  Shareholders  shall  have  executed  and  delivered  the Stock
                  Pledge  and  Escrow  Agreement,  substantially  in  t  e  form
                  attached  hereto as Exhibit H hereto and the  Escrowed  Shares
                  shall have been  deposited with the Escrow Agent to be held in
                  escrow  pursuant  to the  provisions  of the Stock  Pledge and
                  Escrow Agreement.


                                  (viii) CFMC Compliance. The Shareholders shall
                  have received and delivered to SPSS evidence that the right of
                  first  refusal to purchase  the  capital  stock of In2itive by
                  Computers for Marking  Corporation,  a California  corporation
                  ("CFMC") pursuant to that certain Joint Development  Agreement
                  between CFMC and In2itive, has been complied with or waived.

                                    (ix)  Performance.  The Shareholders  hereto
                  shall have  performed in all material  respects all  covenants
                  and  agreements  required by this Agreement to be performed by
                  them on or before the Closing Date.


                                       34

<PAGE>



                                     (x) Further  Assurances.  The  Shareholders
                  shall deliver,  or cause to be delivered,  all other documents
                  required to be delivered at the Closing by the other party and
                  shall  take all other  actions  which the  other  parties  may
                  reasonably  determine  necessary  or  appropriate  in order to
                  consummate fully the transactions contemplated hereby.

                  13.1(b)              The Following deliveries shall be made to
 the Shareholders at the Closing:

                                     (i) Legal  Opinion.  SPSS shall cause to be
                  delivered to the Shareholders the written legal opinion, dated
                  the  Closing  Date,  of  Ross  &  Hardies,  counsel  to  SPSS,
                  substantially in the form attached hereto as Exhibit I.

                                    (ii)  Consents.  SPSS  shall  deliver to the
                  Shareholders  the pooling  letter  referred to in Section 12.8
                  herein and all consents and  approvals  required in connection
                  with the  performance  by SPSS of its  obligations  under this
                  Agreement  and the  consummation  by SPSS of the  transactions
                  contemplated hereby and thereby,  including the consent by the
                  Board of  Directors  of SPSS to the  purchase of the shares of
                  In2itive.

                                   (iii)   Closing   Certificates.   SPSS  shall
                  deliver, or cause to be delivered, to the Shareholders closing
                  certificates  in the form  attached  as Exhibit J hereto,  the
                  Restated  Certificate of Incorporation of SPSS,  By-laws,  and
                  Good Standing Certificate  certified by the Secretary of State
                  of Delaware.

                                    (iv)    Affiliate Letters.  The Shareholders
                  shall  have  received  an  executed Affiliate Letter from each
                  SPSS Affiliate.

                                     (v) Stock Pledge and Escrow Agreement.  The
                  Shareholders  shall  have  executed  and  delivered  the Stock
                  Pledge  and  Escrow  Agreement,   substantially  in  the  form
                  attached  hereto as Exhibit H hereto and the  Escrowed  Shares
                  shall have been  deposited with the Escrow Agent to be held in
                  escrow  pursuant  to the  provisions  of the Stock  Pledge and
                  Escrow Agreement.

                                    (vi)        Share  Certificates.  SPSS shall
                  deliver,  or  cause  to  be  delivered, duly issued and signed
                  share certificates for 90% of the purchase price together with
                  stock powers in blank.

                                   (vii) Further Assurances. SPSS shall deliver,
                  or cause to be delivered,  all other documents  required to be
                  delivered at the Closing by the other party and shall take all
                  other actions which the other parties may reasonably determine
                  necessary  or  appropriate  in order to  consummate  fully the
                  transactions contemplated hereby.


                                       35

<PAGE>




                                   ARTICLE XIV

                          SURVIVAL AND INDEMNIFICATION

                  14.1    Survival of Representations and Warranties; Covenants.
Except  as  otherwise  set  forth in this  Article  XIV of this  Agreement,  all
representations and warranties  contained herein or made in writing by any party
in connection  herewith  shall survive the Closing Date until the earlier of the
first  anniversary  of the Closing Date or the Audit Release Date. All covenants
contained herein shall survive until performed fully.

                  14.2        Indemnification.

                  (a) The Shareholders  agree to indemnify and hold SPSS and its
affiliates  and  the  respective  officers,  directors,  employees,  agents  and
representatives of each of the foregoing  (collectively,  the "Representatives")
harmless from and against any and all costs, expenses,  losses, claims, damages,
penalties,  fines,  liabilities  and  obligations  whenever  arising or incurred
(including,   without   limitation,   amounts  paid  in  settlement,   costs  of
investigation  and attorneys'  fees and expenses)  (individually,  a "Loss," and
collectively,  "Losses")  arising  out of or  relating  to (i) any breach of any
representation  or warranty made by the  Shareholders (A) set forth herein or in
any  related  schedule  or (B) set  forth in any  closing  certificate  or other
document entered into or delivered by In2itive or the Shareholders in connection
with this Agreement; (ii) any breach of any covenant, obligation or agreement of
In2itive or the  Shareholders  contained in this Agreement,  or set forth in any
closing  certificate or other  document  entered into or delivered in connection
with this Agreement; and (iii) any intentional fraud or criminal act on the part
of In2itive or the Shareholders.

                  (b) Without limitation as to the  indemnification set forth in
subparagraph (a) hereof,  the Shareholders agree to indemnify and hold SPSS, and
its affiliates and Representatives harmless from and against (i) any Taxes of or
incurred by In2itive  for any taxable  year or other period the Return for which
was filed or due on or before  the  Closing  Date;  (ii) any Taxes  incurred  by
In2itive for any taxable year or other period  ending on or prior to the Closing
Date, the Return for which is filed or due after the Closing Date, to the extent
in excess of the reserve for tax liability  (excluding  any reserve for deferred
Taxes established to reflect timing differences  between book and tax income) as
set  forth  in  its  most  recent  balance  sheet  contained  in  the  Financial
Statements;  (iii) the pro-rata  share of any Taxes incurred by In2itive for any
taxable year or other period beginning before and ending after the Closing Date,
to the extent in excess of the reserve for tax liability  (excluding any reserve
for deferred taxes  established to reflect timing  differences  between book and
tax income) set forth or included in its most recent balance sheet  contained in
the  Financial  Statements,  as  adjusted  for the  passage of time  through the
Closing Date in accordance with  In2itive's past practice and customs;  and (iv)
all Taxes of any corporation  other than In2itive which was at any time prior to
the Closing Date a member of an "affiliated group" of corporations that included
In2itive.  For purposes of this Subparagraph 14.2(b), in the case of any taxable
period  beginning  before and ending  after the Closing  Date,  for  purposes of
determining the amount of liability for Taxes attributable to the portion of the
taxable

                                       36

<PAGE>



period  ending on or before the  Closing  Date:  (A) in the case of sales,  use,
payroll or excise  Taxes or Taxes based upon or related to income,  such portion
of the  taxable  period  shall be deemed to be a separate  taxable  year and the
Shareholders'  liability shall be determined by taking into account all items of
income, gain, loss, deduction or credit on a basis consistent with that employed
in  preparing  the federal  income tax return of In2itive  for the taxable  year
ending on the Closing Date and the relevant  state or local tax return for prior
years,  and (B) in the case of other Taxes,  the  Shareholders'  liability shall
equal a pro-rata  portion  of the  liability  for taxes for the  entire  taxable
period  based on the  ratio of the  number of days  from the  beginning  of such
taxable  period through the Closing Date to the total number of days included in
such taxable period.

                  (c) All Losses payable by the Shareholders to SPSS pursuant to
the indemnities provided in this Agreement shall not aggregate an amount greater
than the Escrow Shares (the "Cap"), except as set forth in this Section 14.2(c).
Except for a claim under Section  4.5(b)  hereunder or a claim based on a breach
of a  representation  or  warranty  hereunder  caused  by  intentional  fraud or
criminal  action on the part of a  Shareholder,  a claim  against  the  Escrowed
Shares  shall be the  exclusive  remedy for SPSS  hereunder.  Except for a claim
under Section 4.5 hereunder or a claim based on a breach of a representation  or
warranty hereunder involving intention fraud or criminal action on the part of a
Shareholder,  the indemnity provided in this Agreement shall not apply until the
cumulative  amount of all Losses  shall  exceed one percent (1%) of the Purchase
Price,  as measured by multiplying  the number of shares issued pursuant to this
Agreement times the closing price for SPSS on the Closing Date, in the aggregate
(the "Basket"). If the Basket is exceeded, SPSS shall be entitled to the excess,
if any, of the full  amount of all such  claims over the Basket,  subject to the
Cap.  Notwithstanding  any other provision of this Agreement,  in no event shall
the amount of Losses for which SPSS is indemnified by any  Shareholder  pursuant
to Section 4.5 hereof or for which SPSS is  indemnified by any  Shareholder  and
which result from a breach of a representation or warranty caused by intentional
fraud or  criminal  action  by  another  Shareholder  (but not the  indemnifying
Shareholder)  exceed  the  purchase  price  paid by  SPSS  to  such  Shareholder
hereunder,  less  any  other  Losses  for  which  SPSS  is  indemnified  by such
Shareholder  under  this  Agreement  (but not  subtracting  the amount of Losses
resulting from a breach of a representation  or warranty  involving  intentional
fraud or criminal action by such Shareholder).

                  If a claim for breach of a  representation  or warranty on the
part of the  Shareholder  or  Shareholders  is  based  on  intentional  fraud or
criminal  action and is made against a Shareholder or  Shareholders  of In2itive
(the  "Defrauding  Shareholder") by SPSS, the Defrauding  Shareholder  which has
engaged in such  intentional  fraud or criminal  action shall indemnify and hold
SPSS and its Representatives harmless from and against all Losses resulting from
such breach of a  representation  or  warranty  caused by  intentional  fraud or
criminal  action by the Defrauding  Shareholder  without regard to the Basket or
the Cap, and SPSS agrees to claim first against the  Defrauding  Shareholder  to
recoup its Losses.  If the amount of the Losses  resulting  from the breach of a
representation or warranty caused by intentional fraud or criminal action by the
Defrauding  Shareholder exceeds the amount for which SPSS and its Representative
have recouped from the Defrauding Shareholder and its Representatives, then each
other Shareholder shall be

                                       37

<PAGE>



responsible for its pro rata share of the remainder of such Losses on a pro-rata
basis up to a maximum of the  purchase  price  paid by SPSS to such  Shareholder
(its pro rata share of the Purchase Price) less such Shareholder's  share of any
other  Losses  (except for the amount of Losses  resulting  from a breach of any
other representation or warranty involving  intentional fraud or criminal action
by such  Shareholder)  for which SPSS is indemnified by such  Shareholder  under
this Agreement (the "Fraud Cap").  Notwithstanding anything contained or implied
in this  Agreement,  the indemnity  obligations  set forth  hereinabove  in this
paragraph shall survive the Closing without limitation except as provided by the
applicable  statute of  limitations  (including any extension of said statute of
limitations);  provided, however that the indemnity obligations of 2M Invest A/S
and Dansk Erhvervsinvestering A/S set forth in this paragraph shall only survive
until the second anniversary date of the Closing Date.

                  (d) Any  indemnification  payment made pursuant to Article XIV
of this  Agreement  shall be adjusted  to reflect  any tax benefit or  liability
gained or incurred as a result of such indemnification payment.

                  14.3  Indemnification  by SPSS.  SPSS agrees to indemnify  and
hold the shareholders and its affiliates and the respective managers, directors,
employees, agents and representatives of each of the foregoing harmless from and
against any and all Losses relating to (i) any breach of any  representation  or
warranty of SPSS set forth  herein or in any related  schedule,  or set forth in
any closing  certificate or other document  entered into or delivered by SPSS in
connection with this Agreement;  (ii) any breach of any covenant,  obligation or
agreement of SPSS contained in this  Agreement or in any other closing  document
and (iii) any fraudulent representation or intentional  misrepresentation on the
part of SPSS,  unless the claim intentional cause of action with respect thereto
arises  out  of or is  related  to  actions  or  omissions  of  In2itive  or the
Shareholders prior to the Closing Date.

                  14.4        Indemnification Procedure.

                  (a) An  indemnified  party  under this  Article XIV shall give
prompt written notice to the indemnifying party (when and to the extent that the
indemnified  party has actual  knowledge  thereof)  of any  condition,  event or
occurrence   (including   without  limitation  the  commencement  of  any  audit
proceeding,  the notice of non-filing of returns,  the notice of  non-payment of
tax, or any other similar action or notice by any federal, state or other taxing
authority)  or the  commencement  of any action,  suit or  proceeding  for which
indemnification  may be sought, and through counsel  reasonably  satisfactory to
the indemnified party, shall assume the defense thereof or other indemnification
obligation with respect thereto;  provided,  however, that any indemnified party
shall be entitled to  participate  in any such action,  suit or proceeding  with
counsel of its own choice but at its own expense;  and provided,  further,  that
any indemnified party shall be entitled to participate in any such action,  suit
or proceeding with counsel of its own choice at the expense of the  indemnifying
party,  if,  under  applicable  canons of ethics,  joint  representation  of the
indemnifying party and the indemnified party presents a conflict of interest.


                                       38

<PAGE>



                  In any event,  if the  indemnifying  party fails to assume the
defense within a reasonable time, the indemnified  party may assume such defense
or other indemnification  obligation and the reasonable fees and expenses of its
attorneys will be covered by the indemnity  provided for  hereunder.  No action,
suit or proceeding for which  indemnification may be sought shall be compromised
or settled in any manner  which  might  adversely  affect the  interests  of the
indemnifying  party without the prior written consent of the indemnifying  party
(which  shall  not  be  unreasonably  withheld);  provided,  however,  that  the
indemnified  party  may  settle  any  claim  or  cause  of  action  without  the
indemnifying  party's consent, but in such case the indemnifying party shall not
be required to reimburse the indemnified  party for its Losses except and to the
extent that a court of competent  jurisdiction finally determines on appeal that
indemnifying    party   must   indemnify   the   indemnified   party   therefor.
Notwithstanding  anything in this Section 14.4 to the contrary, the indemnifying
party shall not, without the prior written consent of the indemnified party, (i)
settle or compromise  any action,  suit or proceeding or consent to the entry of
any  judgment  which  does not  include as an  unconditional  term  thereof  the
delivery by the  claimant or  plaintiff  to the  indemnified  party of a written
release from all liability in respect of such action, suit or proceeding or (ii)
settle or  compromise  any  action,  suit or  proceeding  in any manner that may
materially and adversely affect the indemnified  party other than as a result of
money  damages or other money  payments.  The  indemnifying  party shall pay all
expenses,  including  attorneys'  fees,  that may be incurred by any indemnified
party in enforcing the indemnity provided for hereunder.

                  (b) In the case of any  proposed or actual  assessment  of tax
liabilities for which SPSS is entitled to indemnification  from the Shareholders
as  provided  in  Section  14.2(b).  SPSS  shall  give  written  notice  to  the
Shareholders  as  provided in  subparagraph  (a) hereof and shall  contest  such
proposed  or  actual  assessment  through  the  administrative  review or appeal
procedures  available  under the  relevant tax laws and  regulations,  provided,
however,  that SPSS shall not be  required  to contest  such  proposed or actual
assessment  unless the  Shareholders  shall first provide an opinion of counsel,
reasonably  acceptable to SPSS,  stating that the Shareholders have a reasonable
basis for their position.  SPSS shall keep the Shareholders fully informed as to
the progress of such contest.  If at any point prior to the  termination  of the
administrative review process, the Shareholders notify SPSS in writing that they
are  willing to accept a  settlement  proposed  by the IRS with  respect to such
proposed or actual assessment of tax liabilities,  SPSS will settle the proposed
or  actual  tax   assessment,   and  SPSS  shall   immediately  be  entitled  to
indemnification  from  the  Shareholders.  If the  Shareholders  never  elect to
request SPSS to settle and such administrative review process is unsuccessful at
eliminating  the  proposed  tax,  SPSS shall be entitled to pay the tax (and any
penalties   and  interest)   and  be  entitled  to   indemnification   from  the
Shareholders;  provided,  that if within ten (10) days of  receipt  from SPSS of
notice that it is paying the tax, the  Shareholders  notify SPSS of their desire
to  contest  the  proposed  or  assessed  tax  deficiency  in  the  courts,  the
Shareholders  shall be entitled to do so  provided  that (a) if the  proposed or
actual tax deficiency is contested in tax court, the Shareholders shall pay from
their own sources any amount of taxes,  penalties and interest  determined to be
due and (b) if the  proposed or actual tax  deficiency  is contested by suit for
refund in any other  court,  funds  shall be provided to SPSS and SPSS shall pay
the tax and if the outcome of the contest determines that the tax paid should be
refunded, such refund shall be

                                       39

<PAGE>



returned to the  Shareholders.  Any post-administrative  review contest shall be
conducted at the sole cost and expense of the Shareholders.

                  14.5  Arbitration.  Any  dispute as to any  claims  under this
Agreement  shall be  settled  by  binding  arbitration  in the City of  Chicago,
Illinois  by  three  arbitrators,   one  of  whom  shall  be  appointed  by  the
Shareholders,  one by SPSS and the third of whom shall be appointed by the first
two arbitrators.  If either party fails to appoint an arbitrator  within 20 days
of a  request  in  writing  by the  other  party  to do so or if the  first  two
arbitrators cannot agree on the appointment of a third arbitrator within 20 days
of their designation, then such arbitrator shall be appointed by the Chief Judge
of the United  States  District  Court for the  Northern  District of  Illinois.
Except as to the selection of arbitrators which shall be as set forth above, the
arbitration shall be conducted promptly and expeditiously in accordance with the
commercial  arbitration rules of the American  Arbitration  Association so as to
enable the arbitrators to render an award within 90 days of the  commencement of
the arbitration proceedings. Judgment upon the award rendered by the arbitrators
may be entered in any court having jurisdiction  thereof.  Each party shall bear
the  expenses of its  arbitrator  and shall  jointly and equally  share with the
other the expenses for the third arbitrator and the arbitration.

                  14.6        Treatment as Adjustment of Acquisition Price.  Any
indemnity  payment  received  by a  party  hereunder  shall  be  treated  as  an
adjustment of the acquisition price.


                                   ARTICLE XV

                        TERMINATION, AMENDMENT AND WAIVER

                              Termination.  This Agreement may be terminated at
any  time  prior  to  the  Closing Date, whether before or after approval by the
Shareholders of In2itive:

                  (a)         by the Board of Directors of SPSS;

                  (b)         by the Shareholders or SPSS  if  a material breach
         of any provision of this Agreement has been committed  and  such breach
         is not waived;

                  (c) by SPSS, if the  conditions set forth in Section XI hereof
         shall not have been complied with or performed in any material  respect
         and such  noncompliance or nonperformance  shall not have been cured or
         eliminated (or by its nature cannot be cured or eliminated) by In2itive
         on or before November 30, 1997; or

                  (d) by  the  Shareholders,  if the  conditions  set  forth  in
         Section XI hereof shall not have been complied with or performed in any
         material  respect and such  noncompliance or  nonperformance  shall not
         have been  cured or  eliminated  (or by its  nature  cannot be cured or
         eliminated) by SPSS or before November 30, 1997; or


                                       40

<PAGE>



                  (e) by  either  SPSS or the  Shareholders  if the  Acquisition
         shall not have been  consummated on or before November 30, 1997 or such
         later date as the parties hereto agree in writing.

                  15.2 Effect of  Termination.  In the event of  termination  of
this Agreement as provided above, this Agreement shall hereafter become void and
there  shall  be  no  liability  or  further  obligation  on  the  part  of  the
Shareholders or SPSS or their respective officers, managers or directors, except
as set forth in Section  10.1 and Section  16.3 and except that  nothing  herein
will relieve any party from liability for breach of this Agreement.


                                   ARTICLE XVI

                                  MISCELLANEOUS

                  16.1        Amendment and Modification.  Subject to applicable
law,  this  Agreement  may be  amended,  modified  and  supplemented  by written
agreement of the parties.

                  16.2 Waiver of Compliance.  Any failure of the Shareholders on
the one hand, or SPSS, on the other, to comply with any obligation herein may be
expressly waived hereunder, but such waiver shall not operate as a waiver of, or
estoppel with respect to, any subsequent or other failure. Any waiver must be in
writing and duly executed by the appropriate parties.

                  16.3 Expenses. Whether or not the transactions contemplated by
this Agreement shall be consummated,  the parties hereto agree that all fees and
expenses incurred by In2itive or the Shareholders, on the one hand, and SPSS, on
the other,  in connection with this Agreement,  and the  transactions  and other
actions contemplated thereby or taken in connection therewith, shall be borne by
the Shareholders, and by SPSS, respectively,  including, without limitation, all
fees of counsel and accountants,  provided,  however,  the Shareholders and SPSS
agree to each pay  one-half of any assessed  Danish stock  transfer tax due upon
completion of the  Acquisition,  SPSS agrees to pay fees incurred by In2itive to
KPMG Peat Marwick for the audit of In2itive  financials,  if  required,  and the
Total  Shares  shall be reduced  accordingly.  Payment of the fees and  expenses
incurred by the In2itive  Shareholders  not  exceeding  $99,163 shall be made by
SPSS,  and the Total  Shares  shall be reduced in  accordance  with  Section 1.2
hereof.

                  16.4  Notices.  All  notices,   requests,  demands  and  other
communications  required or permitted hereunder shall be in writing and shall be
deemed  to  have  been  duly  given  when  delivered  by  hand  or by  facsimile
transmission  (receipt  confirmed),  one day  after  being  sent  by  recognized
overnight courier or delivery service, freight prepaid, or five days after being
mailed, certified or registered mail, postage prepaid, return receipt requested:


                                       41

<PAGE>



                  (a)         If to the Shareholders to:

                                       Ole Stangegaard
                                       In2itive Technologies, AS
                                       Roejelskaer 11
                                       DK-2840 Holte, Copenhagen, Denmark
                                       Facsimile Number:  45 45 41 15 45

                                       with a copy to:

                                       Mazanti-Andersen, Korso Jensen & Brothers
                                       Store Kongensgade 69
                                       1264 Copenhagen, Denmark
                                       Attention: Georg Dedichen
                                       Facsimile Number: 011 45 33 111073

         or to such  other  person or address as  In2itive  or the  Shareholders
         shall  furnish  to SPSS in  writing  by notice  given in the manner set
         forth in (a) above.

                  (b)         If to SPSS to:

                                       SPSS Inc.
                                       444 North Michigan Avenue
                                       Chicago, Illinois 60611
                                       Attention:  Mr. Edward Hamburg
                                       Facsimile Number: (312) 329-3558

                                       with a copy to:

                                       Ross & Hardies
                                       150 North Michigan Avenue, Suite 2500
                                       Chicago, Illinois 60601
                                       Attention: T. Stephen Dyer, Esq.
                                       Facsimile Number: (312) 750-8600

or to such other person or address as SPSS shall  furnish to In2itive in writing
by notice given in the manner set forth above.

                  16.5  Assignment.  This  Agreement  and all of the  provisions
hereof shall be binding upon and inure to the benefit of the parties  hereto and
their respective  successors and permitted  assigns,  but neither this Agreement
nor any of the rights,  interests or obligations  hereunder shall be assigned by
any of the  parties  hereto  without  the  prior  written  consent  of the other
parties,  except by  operation of law and except that SPSS may assign its rights
and  obligations  under this Agreement to any other entity wholly owned by SPSS.
If such assignment

                                                        42

<PAGE>



shall be made by SPSS,  the assignee  shall be entitled to all of the rights and
shall assume all of the obligations of SPSS hereunder, provided, that SPSS shall
remain  liable for and guarantee the  performance  of such entity's  obligations
under this Agreement.

                  16.6 Publicity. In2itive nor the Shareholders,  nor SPSS shall
make or  issue,  or cause to be made or  issued,  any  announcement  or  written
statement concerning this Agreement or the transactions  contemplated hereby for
dissemination  to the general  public,  without the prior written consent of the
other parties.  This provision shall not apply,  however, to any announcement or
written statement  required to be made by law, the regulations of any federal or
state governmental agency or any stock exchange,  except that the party required
to make such announcement shall,  whenever  practicable,  consult with the other
party  concerning  the  timing  and  content of such  announcement  before  such
announcement is made.

                  16.7 Headings.  The Article and Section headings  contained in
this Agreement are inserted for convenience only and shall not affect in any way
the meaning or interpretation of this Agreement.

                  16.8 Severability. If any provision of this Agreement shall be
determined  to be contrary  to law and  unenforceable  by any court of law,  the
remaining provisions shall be severable and enforceable in accordance with their
terms.

                  16.9 Governing  Law. This  Agreement  shall be governed by and
construed  in  accordance  with the laws of the State of  Illinois of the United
States of America,  without regard to its conflicts of law doctrine. The parties
hereto expressly  submit  themselves to the  non-exclusive  jurisdictions of the
State and Federal Courts of the Northern District of Illinois for the resolution
of any disputes  which may arise under or with respect to  compliance  with this
Agreement.

                  16.10   Counterparts.   This   Agreement   may   be   executed
simultaneously  in two or more  counterparts,  each of which  shall be deemed an
original,  but  all  of  which  together  shall  constitute  one  and  the  same
instrument.

                  16.11 Third  Parties.  Nothing  herein  shall be  construed to
confer  upon or give to any  party  other  than the  parties  hereto  and  their
successors or permitted  assigns,  any rights or remedies  under or by reason of
this Agreement.

                  16.12  References to Laws.  References to particular  statutes
within this Agreement,  to the extent such references  relate to laws other than
the laws of the United States or any particular  State thereof,  are intended to
refer, and shall be construed as referring, to laws of Denmark.

                  16.13       Entire Agreement.  This Agreement,  including  the
Exhibits and Schedules hereto, sets forth the entire agreement and understanding
of the parties hereto in respect


                                       43

<PAGE>



of the subject matter  contained  herein,  and supersedes all prior  agreements,
covenants,  representations or warranties, whether oral or written, by any party
hereto.

                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Agreement to be duly executed, all as of the day and year first written above.

                                                SPSS INC.


                                                /s/ Edward Hamburg
                                                By: Edward Hamburg

                                                Title:  Executive Vice President
                                                Corporate Operations and Chief
                                                Executive Officer

SHAREHOLDERS:

/s/ Jens Nielsen               /s/ Bjorn Haugland
- ----------------------------- ----------------------------
Jens Nielsen                   Bjorn Haugland

                              /s/ Soren Brunn, 
/s/ Henrik Rosendahl          as power of attorney
- ----------------------------- ----------------------------
Henrik Rosendahl               2M Invest
                               By:
                               Its:

                              /s/ Ole Stangegaard, 
/s/ Ole Stangegaard           as power of attorney 
- ----------------------------- ----------------------------
Ole Stangegaard               Peter Tottrup

                              /s/ Ole Stangegaard, 
/s/ Lars Thinggard            as power of attorney 
- ----------------------------- ----------------------------
Lars Thinggaard               Steen Hansen

                              /s/ Ole Stangegaard, 
/s/ Edward O'Hara             as power of attorney 
- ----------------------------- ----------------------------
Edward O'Hara                  Magnus Egholm

/s/ Ole Stangegaard,           /s/ Ole Stangegaard, 
as power of attorney           as power of attorney  
- ----------------------------- ----------------------------
Mikkel Jorgensen               Michael Elbaek Bertelsen


/s/ Ole Stangegaard,          /s/ Ole Stangegaard,
as power of attorney          as power of attorney
- ----------------------------- ----------------------------
Bjarne Jensen                  Thomas Leistiko


/s/ Ole Stangegaard,          /s/ Ole Stangegaard,
as power of attorney          as power of attorney                         
- ----------------------------- ----------------------------
Dansk Erhvervsinvestering     Dorte Siggaard Andersen
By:

                                       44

<PAGE>



/s/ Ole Stangegaard,          /s/ Ole Stangegaard,
as power of attorney          as power of attorney
- ----------------------------- ----------------------------
MSP Finans 2 ApS               Hans Chr. Iversen

                                       45

<PAGE>




THE  SHAREHOLDERS'  REPRESENTATIVE  HEREBY  ACCEPTS AND AGREES TO THE DUTIES AND
OBLIGATIONS SET FORTH HEREIN.




/s/ Ole Stangegaard
- -----------------------------
Ole Stangegaard, as Shareholders' Representative

                                       46

<PAGE>



                                TABLE OF CONTENTS

ARTICLE I - TERMS OF PURCHASE AND SALE........................................ 1
         1.1      Purchase and Sale of the Shares............................. 1
         1.2      Payment of Purchase Price................................... 1
         1.3      Closing..................................................... 2
         1.4      Tax and Accounting.......................................... 2

ARTICLE II SHAREHOLDERS' REPRESENTATIVE....................................... 2

ARTICLE III ESCROW............................................................ 4
         3.1      Escrow...................................................... 4
         3.2      Escrowed Shares............................................. 4

ARTICLE IV SECURITIES MATTERS................................................. 4
         4.1      Registration of SPSS Common Stock........................... 4
         4.2      Sales of SPSS Common Stock by Shareholders.................. 6
         4.3      Registration Expenses....................................... 6
         4.4      Restricted Stock............................................ 6
         4.5      Indemnification ............................................ 7
         4.6      Additional Obligations of SPSS.............................. 9
         4.7      Reports Under the Exchange Act.............................. 8

ARTICLE V REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDERS..................10
         5.1      Organization and Qualification..............................10
         5.2      Authority...................................................10
         5.3      Capitalization..............................................11
         5.4      Title to Shares.............................................11
         5.5      Consents and Approvals......................................12
         5.6      Absence of Conflicts........................................12
         5.7      Financial Statements; Accounts Receivable...................12
         5.8      Absence of Undisclosed Liabilities; Warranties in Connection 
                  with Software Products......................................12
         5.9      Absence of Certain Changes or Events........................13
         5.10     Investment in the SPSS Common Stock.........................14
         5.11     Real and Personal Property; Inventories.....................15
         5.12     Patents, Trademarks, Etc....................................15
         5.13     Employees...................................................16
         5.14     Contracts and Commitments...................................16
         5.15     Source Code.................................................17
         5.16     Government Contracts........................................17
         5.17     Insurance...................................................17
         5.18     Litigation and Administrative Proceedings...................17
         5.19     Tax Matters.................................................18

                                        i

<PAGE>



         5.20     Compliance with Laws........................................19
         5.21     Environmental and Safety Matters............................19
         5.22     Employee Benefits...........................................20
         5.23     Licenses and Permits........................................20
         5.24     Relations With Suppliers and Customers......................20
         5.25     Interests in Competitors, Suppliers and Customers...........20
         5.26     Employment Matters..........................................20
         5.27     Related Transactions........................................21
         5.28     Brokers and Finders.........................................21
         5.29     Questionable Payments.......................................21
         5.30     Books and Records...........................................21
         5.31     Bank Accounts; Safe Deposit Boxes...........................21
         5.32     Full Disclosure.............................................21
         5.33     Effect of Certificates......................................22
         5.34     Accounting Matters..........................................22

ARTICLE VI REPRESENTATIONS AND WARRANTIES OF SPSS.............................22
         6.1      Organization and Qualification. ............................22
         6.2      Authority...................................................22
         6.3      Consents and Approvals......................................22
         6.4      Absence of Conflicts........................................23
         6.5      Capitalization..............................................23
         6.6      Reports and Financial Statement.............................23
         6.7      Litigation and Administrative Proceedings.  ................24
         6.8      Brokers and Finders.........................................24
         6.9      SPSS Common Stock...........................................24
         6.10     Effect of Certificates......................................24
         6.11     Pooling of Interests Accounting.............................24
         6.12     Dividends and Distributions.................................24
         6.13     Marketable Title............................................24
         6.14     Reliance on Responses.......................................24

ARTICLE VII COVENANTS RELATING TO CONDUCT OF BUSINESS.........................25
         7.1      Conduct of Business.........................................25

ARTICLE VIII COVENANTS OF THE SHAREHOLDERS....................................27
         8.1      Consents and Approvals......................................27
         8.2      Closing Tax.................................................28
         8.3      Access to Information.......................................28
         8.4      Affiliates and Certain Stockholders.........................28
         8.5      Further Assurances..........................................29

ARTICLE IX COVENANTS OF SPSS..................................................29
         9.1      Retention of Records........................................29

                                       ii

<PAGE>



         9.2      Severance Packages..........................................29
         9.3      Further Assurances..........................................29
         9.4      Affiliates and Certain Stockholders.........................29

ARTICLE X MUTUAL COVENANTS....................................................30
         10.1     Confidentiality.............................................30
         10.2     Consistent Tax Reporting....................................30
         10.3     Cooperation.................................................31

ARTICLE XI CONDITIONS TO OBLIGATIONS .........................................31
         11.1     Representations and Warranties..............................31
         11.2     Performance.................................................31
         11.3     Filings; Consents; Waiting Periods..........................31
         11.4     No Injunction...............................................31
         11.5     Pooling.....................................................31
         11.6     Delivery....................................................32
         11.7     Legal Opinion...............................................32

ARTICLE XII CONDITIONS TO OBLIGATIONS OF SPSS.................................32
         12.1     Representations and Warranties..............................32
         12.2     Performance.................................................32
         12.3     Filings; Consents; Waiting Periods..........................32
         12.4     No Litigation...............................................32
         12.5     Non-Compete Agreements......................................33
         12.6     Legal Opinion...............................................33
         12.7     Pooling.....................................................33
         12.8     Shareholder Approval........................................33
         12.9     Affiliates and Certain Stockholders.........................33
         12.10    Delivery....................................................33
                                                                  
ARTICLE XIII CLOSING DELIVERIES...............................................33
         13.1     Books and Records...........................................33
         13.2     Legal Opinion...............................................34
         13.3     Consents....................................................34
         13.4     Closing Certificates........................................34
         13.5     Charter; Certificates.......................................34
         13.6     Affiliates Letters..........................................34
         13.7     Stock Pledge and Escrow Agreement...........................34
         13.8     Resignations of In2itive's Managers and Directors...........34
         13.9     CFMC Compliance.............................................34
         13.10                Performance.....................................34
         13.11                Further Assurances..............................35

ARTICLE XIV SURVIVAL AND INDEMNIFICATION......................................36

                                       iii

<PAGE>


         14.1     Survival of Representations and Warranties; Covenants.......36
         14.2     Indemnification.............................................36
         14.3     Indemnification by SPSS.....................................38
         14.4     Indemnification Procedure...................................38
         14.5     Arbitration.................................................40
         14.6     Treatment as Adjustment of Acquisition Price................40

ARTICLE XV TERMINATION, AMENDMENT AND WAIVER..................................40
         15.1     Termination.................................................40
         15.2     Effect of Termination.......................................41
                                                                  
ARTICLE XVI MISCELLANEOUS.....................................................41
         16.1     Amendment and Modification..................................41
         16.2     Waiver of Compliance........................................41
         16.3     Expenses....................................................41
         16.4     Notices.....................................................41
         16.5     Assignment..................................................42
         16.6     Publicity...................................................43
         16.7     Headings....................................................43
         16.8     Severability................................................43
         16.9     Governing Law...............................................43
         16.10    Counterparts................................................43
         16.11    Third Parties...............................................43
         16.12    References to Laws..........................................43
         16.13    Entire Agreement............................................43



                                       iv




                                                                     EXHIBIT 5.1



                                                     November 26, 1997

SPSS INC.
444 N. Michigan Avenue
Chicago, Illinois  60611

          Re:  Registration Statement on Form S-3

Ladies and Gentlemen:

          You have  requested  our opinion with respect to the offering and sale
of  Common  Stock  pursuant  to  a  Registration  Statement  on  Form  S-3  (the
"Registration  Statement")  under the  Securities  Act of 1933,  as amended (the
"Act"),  of up to an  aggregate of 1,031,951  shares of Common  Stock,  $.01 par
value per share (the "Common Stock") of SPSS Inc. (the "Corporation").

          In so acting,  we have  examined  originals  or copies,  certified  or
otherwise identified to our satisfaction, of such documents,  corporate records,
certificates of public  officials and other  instruments and have conducted such
other investigations of fact and law as we have deemed relevant and necessary to
form a  basis  for  the  opinions  hereinafter  expressed.  In  conducting  such
examination,  we have assumed (i) that all signatures are genuine, (ii) that all
documents and instruments  submitted to us as copies conform with the originals,
and (iii) the due execution  and delivery of all  documents  where due execution
and delivery are a prerequisite to the  effectiveness  thereof.  As to any facts
material to this opinion,  we have relied upon statements and representations of
officers and other representatives of the Corporation and certificates of public
officials and have not independently verified such facts.

          Based upon the  foregoing,  it is our opinion that the Common Stock is
legally issued, fully paid and non-assessable.

          We express no  opinion as to the laws of any  jurisdiction  other than
the State of Illinois, the United States of America, and, solely with respect to
matters of corporate organization and authority,  the General Corporation Law of
the State of  Delaware.  We are not admitted to the practice of law in the State
of Delaware.  Insofar as the foregoing  opinion relates to matters that would be
controlled by the  substantive  laws of any  jurisdiction  other than the United
States of America,  the General  Corporation  Law of the State of Delaware (with
respect to matters of  corporate  organization  and  authority)  or the State of
Illinois, we have assumed that the substantive laws of such jurisdiction conform
in all respects to the internal laws of the State of Illinois.

          We hereby  consent to the use of this  opinion  as Exhibit  5.1 to the
Registration  Statement  relating to the  registration  of  1,031,951  shares of
Common Stock and to the use of our name as your counsel in  connection  with the
Registration Statement and in the Prospectus forming a part thereof.

                                                     Very truly yours,

                                                     ROSS & HARDIES

                                                     By:  /s/  T. Stephen Dyer
                                                               A Partner



                                                      - 28 -




                                                                    EXHIBIT 15.1

               LETTER RE: UNAUDITED INTERIM FINANCIAL INFORMATION

The Board of Directors
SPSS Inc.:

          With  respect to the subject  registration  statement  on Form S-3, we
acknowledge  our  awareness of the  incorporation  by  reference  therein of our
reports dated April 29, 1997,  July 29, 1997,  and October 29, 1997,  related to
our reviews of interim  financial  information  as of March 31,  1997,  June 30,
1997,  and  September  30,  1997,  respectively,  which  reports  appear  in the
quarterly  reports on Form 10-Q of SPSS Inc.  for the  quarters  ended March 31,
1997,  June 30, 1997,  and September  30, 1997,  respectively,  incorporated  by
reference therein.

          Pursuant to Rule 436(c) under the Securities Act of 1933, such reports
are not considered part of a registration  statement prepared or certified by an
accountant or a report prepared or certified by an accountant within the meaning
of sections 7 and 11 of the Act.


                                                       /s/ KPMG PEAT MARWICK LLP


Chicago, Illinois
November 26, 1997


                                                      - 29 -




                                  EXHIBIT 23.1
                                               ACCOUNTANTS' CONSENT

The Board of Directors
SPSS Inc.:

         We consent to incorporation by reference in the registration  statement
on Form S-3 of SPSS Inc. of our audit report dated  February 19, 1997,  relating
to the consolidated  balance sheets of SPSS Inc. and subsidiaries as of December
31,  1996  and  1995,  and  the  related  consolidated   statements  of  income,
stockholders'  equity,  and cash  flows for each of the years in the  three-year
period ended December 31, 1996, and the related  schedule,  which report appears
in the December 31, 1996 annual report on Form 10-K of SPSS Inc.


                                                       /s/ KPMG PEAT MARWICK LLP



Chicago, Illinois
November 26, 1997




                                                      - 30 -



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